diff --git a/package.json b/package.json
index 56ee0445..f487e588 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,6 @@
   "dependencies": {
     "color": "^1.0.3",
     "file-saver": "^1.3.2",
-    "immutable": "^3.8.1",
     "lodash.throttle": "^4.1.1",
     "lodash.topairs": "^4.3.0",
     "mapbox-gl": "mapbox/mapbox-gl-js#6c24b9621d2aa770eda67fb5638b4d78087b5624",
diff --git a/src/components/About.jsx b/src/components/About.jsx
index 83d2fb4c..e2abf582 100644
--- a/src/components/About.jsx
+++ b/src/components/About.jsx
@@ -8,18 +8,8 @@ import Toolbar from 'rebass/dist/Toolbar'
 import NavItem from 'rebass/dist/NavItem'
 import Space from 'rebass/dist/Space'
 
-import Immutable from 'immutable'
-import PureRenderMixin from 'react-addons-pure-render-mixin';
-
 /** About page with basic infos and links to github repo */
 export class About extends React.Component {
-	static propTypes = {}
-
-	constructor(props) {
-		super(props);
-		this.shouldComponentUpdate = PureRenderMixin.shouldComponentUpdate.bind(this);
-	}
-
 	render() {
 		return <div>
 			<Toolbar style={{marginRight: 20}}>
diff --git a/src/components/App.jsx b/src/components/App.jsx
index f09fa60c..b7139df9 100644
--- a/src/components/App.jsx
+++ b/src/components/App.jsx
@@ -1,5 +1,4 @@
 import React from 'react'
-import Immutable from 'immutable'
 import { saveAs } from 'file-saver'
 
 import Drawer from 'rebass/dist/Drawer'
@@ -43,7 +42,7 @@ export default class App extends React.Component {
     this.state = {
       accessToken: this.settingsStore.accessToken,
       mapStyle: style.emptyStyle,
-      selectedLayerId: null,
+      selectedLayerIndex: 0,
     }
   }
 
@@ -60,19 +59,20 @@ export default class App extends React.Component {
   }
 
   onStyleDownload() {
-    const mapStyle = style.toJSON(this.state.mapStyle)
+    const mapStyle = this.state.mapStyle
     const blob = new Blob([JSON.stringify(mapStyle, null, 4)], {type: "application/json;charset=utf-8"});
     saveAs(blob, mapStyle.id + ".json");
     this.onStyleSave()
   }
 
   onStyleUpload(newStyle) {
+    console.log('upload', newStyle)
     const savedStyle = this.styleStore.save(newStyle)
     this.setState({ mapStyle: savedStyle })
   }
 
   onStyleSave() {
-    const snapshotStyle = this.state.mapStyle.set('modified', new Date().toJSON())
+    const snapshotStyle = this.state.mapStyle.modified = new Date().toJSON()
     this.setState({ mapStyle: snapshotStyle })
     console.log('Save')
     this.styleStore.save(snapshotStyle)
@@ -88,20 +88,22 @@ export default class App extends React.Component {
   }
 
   onLayersChanged(changedLayers) {
-    const changedStyle = this.state.mapStyle.set('layers', changedLayers)
-    this.onStyleChanged(changedStyle)
+    const changedStyle = {
+      ...this.state.mapStyle,
+      layers: [changedLayers]
+    }
+    this.setState({ mapStyle: newStyle })
   }
 
   onLayerChanged(layer) {
-    console.log('layer changed', layer)
-    const layers = this.state.mapStyle.get('layers')
-    const changedLayers = layers.set(layer.get('id'), layer)
-    this.onLayersChanged(changedLayers)
-  }
-
-  onLayerChanged(layer) {
-    const changedStyle = this.state.mapStyle.setIn(['layers', layer.id], Immutable.fromJS(layer))
-    this.onStyleChanged(changedStyle)
+    const changedStyle = {
+      ...this.state.mapStyle,
+      layers: {
+        ...this.state.mapStyle.layers,
+        [layer.id]: layer
+      }
+    }
+    this.setState({ mapStyle: changedStyle })
   }
 
   mapRenderer() {
@@ -112,7 +114,9 @@ export default class App extends React.Component {
         this.layerWatcher.map = map
       }
     }
-    const renderer = this.state.mapStyle.getIn(['metadata', 'maputnik:renderer'], 'mbgljs')
+
+    const metadata = this.state.mapStyle.metadata || {}
+    const renderer = metadata['maputnik:renderer'] || 'mbgljs'
     if(renderer === 'ol3') {
       return  <OpenLayers3Map {...mapProps} />
     } else {
@@ -121,11 +125,18 @@ export default class App extends React.Component {
   }
 
   onLayerSelected(layerId) {
-    this.setState({ selectedLayerId: layerId })
+    const layers = this.state.mapStyle.layers
+    for (let i = 0; i < layers.length; i++) {
+      if(layers[i].id === layerId) {
+        this.setState({ selectedLayerIndex: i })
+        break
+      }
+    }
   }
 
   render() {
-    const selectedLayer = this.state.mapStyle.getIn(['layers', this.state.selectedLayerId], null)
+    const layers = this.state.mapStyle.layers || []
+    const selectedLayer = layers.length > 0 ? layers[this.state.selectedLayerIndex] : null
 
     return <div style={{ fontFamily: theme.fontFamily, color: theme.color, fontWeight: 300 }}>
       <Toolbar
@@ -149,7 +160,7 @@ export default class App extends React.Component {
         <LayerList
           onLayersChanged={this.onLayersChanged.bind(this)}
           onLayerSelected={this.onLayerSelected.bind(this)}
-          layers={this.state.mapStyle.get('layers')}
+          layers={layers}
         />
       </div>
       <div style={{
@@ -162,7 +173,7 @@ export default class App extends React.Component {
         width: 300,
         backgroundColor: colors.gray}
       }>
-      {selectedLayer && <LayerEditor layer={selectedLayer.toJS()} onLayerChanged={this.onLayerChanged.bind(this)} sources={this.layerWatcher.sources} vectorLayers={this.layerWatcher.vectorLayers}/>}
+      {selectedLayer && <LayerEditor layer={selectedLayer} onLayerChanged={this.onLayerChanged.bind(this)} sources={this.layerWatcher.sources} vectorLayers={this.layerWatcher.vectorLayers}/>}
       </div>
       {this.mapRenderer()}
     </div>
diff --git a/src/components/Toolbar.jsx b/src/components/Toolbar.jsx
index 9b130cab..522cf1c8 100644
--- a/src/components/Toolbar.jsx
+++ b/src/components/Toolbar.jsx
@@ -1,5 +1,4 @@
 import React from 'react'
-import Immutable from 'immutable'
 import FileReaderInput from 'react-file-reader-input'
 
 import Button from 'rebass/dist/Button'
@@ -37,7 +36,7 @@ const InlineBlock = props => <div style={{display: "inline-block", ...props.styl
 
 export default class Toolbar extends React.Component {
   static propTypes = {
-    mapStyle: React.PropTypes.instanceOf(Immutable.Map).isRequired,
+    mapStyle: React.PropTypes.object.isRequired,
     onStyleChanged: React.PropTypes.func.isRequired,
     // A new style has been uploaded
     onStyleUpload: React.PropTypes.func.isRequired,
@@ -60,7 +59,7 @@ export default class Toolbar extends React.Component {
     const reader = new FileReader();
     reader.readAsText(file, "UTF-8");
     reader.onload = e => {
-      let mapStyle = style.fromJSON(JSON.parse(e.target.result))
+      let mapStyle = JSON.parse(e.target.result)
       mapStyle = style.ensureMetadataExists(mapStyle)
       this.props.onStyleUpload(mapStyle);
     }
@@ -68,7 +67,7 @@ export default class Toolbar extends React.Component {
   }
 
   saveButton() {
-    if(this.props.mapStyle.get('layers').size > 0) {
+    if(this.props.mapStyle.layers.length > 0) {
       return <InlineBlock>
         <Button onClick={this.props.onStyleSave} big={true}>
           <MdSave />
diff --git a/src/components/fields/ColorField.jsx b/src/components/fields/ColorField.jsx
index 7ed34d61..3a4f7da8 100644
--- a/src/components/fields/ColorField.jsx
+++ b/src/components/fields/ColorField.jsx
@@ -35,7 +35,6 @@ class ColorField extends React.Component {
   }
 
   render() {
-    console.log(Color(this.props.value))
     const picker = <div style={{
         position: 'absolute',
         left: 163,
diff --git a/src/components/fields/PropertyGroup.jsx b/src/components/fields/PropertyGroup.jsx
index 665a9e4a..240b036d 100644
--- a/src/components/fields/PropertyGroup.jsx
+++ b/src/components/fields/PropertyGroup.jsx
@@ -1,5 +1,4 @@
 import React from 'react'
-import Immutable from 'immutable'
 import GlSpec from 'mapbox-gl-style-spec/reference/latest.min.js'
 
 import ZoomSpecField from './ZoomSpecField'
@@ -26,7 +25,7 @@ function getGroupName(layerType, fieldName) {
 export default class PropertyGroup extends React.Component {
   static propTypes = {
     layer: React.PropTypes.object.isRequired,
-    groupFields: React.PropTypes.instanceOf(Immutable.OrderedSet).isRequired,
+    groupFields: React.PropTypes.array.isRequired,
     onChange: React.PropTypes.func.isRequired,
   }
 
@@ -50,7 +49,7 @@ export default class PropertyGroup extends React.Component {
         value={fieldValue}
         fieldSpec={fieldSpec}
       />
-    }).toIndexedSeq()
+    })
 
     return <div style={{
       padding: margins[2],
diff --git a/src/components/fields/SpecField.jsx b/src/components/fields/SpecField.jsx
index 97749423..1ccdef0a 100644
--- a/src/components/fields/SpecField.jsx
+++ b/src/components/fields/SpecField.jsx
@@ -1,5 +1,4 @@
 import React from 'react'
-import Immutable from 'immutable'
 import color from 'color'
 
 import GlSpec from 'mapbox-gl-style-spec/reference/latest.min.js'
@@ -12,10 +11,6 @@ import StringField from './StringField'
 import input from '../../config/input.js'
 import theme from '../../config/rebass.js'
 
-function isZoomField(value) {
-  return Immutable.Map.isMap(value)
-}
-
 function labelFromFieldName(fieldName) {
   let label = fieldName.split('-').slice(1).join(' ')
   if(label.length > 0) {
diff --git a/src/components/fields/ZoomSpecField.jsx b/src/components/fields/ZoomSpecField.jsx
index 45e9d01e..13611c43 100644
--- a/src/components/fields/ZoomSpecField.jsx
+++ b/src/components/fields/ZoomSpecField.jsx
@@ -1,5 +1,4 @@
 import React from 'react'
-import Immutable from 'immutable'
 import Color from 'color'
 
 import NumberField from './NumberField'
@@ -14,7 +13,7 @@ import colors from '../../config/colors.js'
 import { margins } from '../../config/scales.js'
 
 function isZoomField(value) {
-  return Immutable.Map.isMap(value)
+  return typeof value === 'object' && value.stops
 }
 
 const specFieldProps =  {
@@ -46,9 +45,9 @@ export default class ZoomSpecField extends React.Component {
     </label>
 
     if(isZoomField(this.props.value)) {
-      const zoomFields = this.props.value.get('stops').map(stop => {
-        const zoomLevel = stop.get(0)
-        const value = stop.get(1)
+      const zoomFields = this.props.value.stops.map(stop => {
+        const zoomLevel = stop[0]
+        const value = stop[1]
 
         return <div style={input.property} key={zoomLevel}>
           {label}
@@ -71,7 +70,7 @@ export default class ZoomSpecField extends React.Component {
             max={22}
           />
         </div>
-      }).toSeq()
+      })
       return <div style={{
           border: 1,
           borderStyle: 'solid',
diff --git a/src/components/filter/FilterEditor.jsx b/src/components/filter/FilterEditor.jsx
index ededcf06..432c5c56 100644
--- a/src/components/filter/FilterEditor.jsx
+++ b/src/components/filter/FilterEditor.jsx
@@ -1,5 +1,4 @@
 import React from 'react'
-import Immutable from 'immutable'
 import PureRenderMixin from 'react-addons-pure-render-mixin';
 import GlSpec from 'mapbox-gl-style-spec/reference/latest.min.js'
 
@@ -75,11 +74,11 @@ class SingleFilterEditor extends React.Component {
   static propTypes = {
     filter: React.PropTypes.array.isRequired,
     onChange: React.PropTypes.func.isRequired,
-    properties: React.PropTypes.instanceOf(Immutable.Map),
+    properties: React.PropTypes.object,
   }
 
   static defaultProps = {
-    properties: Immutable.Map(),
+    properties: {},
   }
 
   onFilterPartChanged(filterOp, propertyName, filterArgs) {
@@ -103,9 +102,9 @@ class SingleFilterEditor extends React.Component {
         value={propertyName}
         onChange={newPropertyName => this.onFilterPartChanged(filterOp, newPropertyName, filterArgs)}
       >
-        {this.props.properties.keySeq().map(propName => {
+        {Object.keys(this.props.properties).map(propName => {
           return <option key={propName} value={propName}>{propName}</option>
-        }).toIndexedSeq()}
+        })}
       </select>
       <OperatorSelect
         value={filterOp}
@@ -129,7 +128,7 @@ class SingleFilterEditor extends React.Component {
 export default class CombiningFilterEditor extends React.Component {
   static propTypes = {
     /** Properties of the vector layer and the available fields */
-    properties: React.PropTypes.instanceOf(Immutable.Map).isRequired,
+    properties: React.PropTypes.object.isRequired,
     filter: React.PropTypes.array.isRequired,
     onChange: React.PropTypes.func.isRequired,
   }
diff --git a/src/components/layers/LayerEditor.jsx b/src/components/layers/LayerEditor.jsx
index 8ee7b667..96fab8d7 100644
--- a/src/components/layers/LayerEditor.jsx
+++ b/src/components/layers/LayerEditor.jsx
@@ -1,5 +1,4 @@
 import React from 'react'
-import Immutable from 'immutable'
 
 import Toolbar from 'rebass/dist/Toolbar'
 import NavItem from 'rebass/dist/NavItem'
@@ -29,8 +28,8 @@ class UnsupportedLayer extends React.Component {
 export default class LayerEditor extends React.Component {
   static propTypes = {
     layer: React.PropTypes.object.isRequired,
-    sources: React.PropTypes.instanceOf(Immutable.Map),
-    vectorLayers: React.PropTypes.instanceOf(Immutable.Map),
+    sources: React.PropTypes.object,
+    vectorLayers: React.PropTypes.object,
     onLayerChanged: React.PropTypes.func,
     onLayerDestroyed: React.PropTypes.func,
   }
@@ -94,7 +93,7 @@ export default class LayerEditor extends React.Component {
       return <PropertyGroup
         key={this.props.group}
         layer={this.props.layer}
-        groupFields={Immutable.OrderedSet(group.fields)}
+        groupFields={group.fields}
         onChange={this.onPropertyChange.bind(this)}
       />
     })
@@ -119,19 +118,20 @@ export default class LayerEditor extends React.Component {
         </NavItem>
       </Toolbar>
         {propertyGroups}
+           {this.props.layer.type !== 'background' && <div>
           <FilterEditor
             filter={this.props.layer.filter}
-            properties={this.props.vectorLayers.get(this.props.layer['source-layer'])}
-            onChange={f => this.onFilterChange(Immutable.fromJS(f))}
+            properties={this.props.vectorLayers[this.props.layer['source-layer']]}
+            onChange={f => this.onFilterChange(f)}
           />
-           {this.props.layer.type !== 'background'
-             && <SourceEditor
-              source={this.props.layer.source}
-              sourceLayer={this.props.layer['source-layer']}
-              sources={this.props.sources}
-              onSourceChange={console.log}
-              onSourceLayerChange={console.log}
-            />}
+          <SourceEditor
+            source={this.props.layer.source}
+            sourceLayer={this.props.layer['source-layer']}
+            sources={this.props.sources}
+            onSourceChange={console.log}
+            onSourceLayerChange={console.log}
+          />
+          </div>}
     </div>
   }
 }
diff --git a/src/components/layers/LayerList.jsx b/src/components/layers/LayerList.jsx
index 854a62dd..55a36517 100644
--- a/src/components/layers/LayerList.jsx
+++ b/src/components/layers/LayerList.jsx
@@ -1,6 +1,5 @@
 import React from 'react'
 import PureRenderMixin from 'react-addons-pure-render-mixin';
-import Immutable from 'immutable'
 
 import Heading from 'rebass/dist/Heading'
 import Toolbar from 'rebass/dist/Toolbar'
@@ -15,7 +14,7 @@ import { margins } from '../../config/scales.js'
 import {SortableContainer, SortableHandle, arrayMove} from 'react-sortable-hoc';
 
 const layerListPropTypes = {
-  layers: React.PropTypes.instanceOf(Immutable.OrderedMap),
+  layers: React.PropTypes.array.isRequired,
   onLayersChanged: React.PropTypes.func.isRequired,
   onLayerSelected: React.PropTypes.func,
 }
@@ -34,23 +33,18 @@ class LayerListContainer extends React.Component {
   }
 
   onLayerDestroyed(deletedLayer) {
-    const remainingLayers = this.props.layers.delete(deletedLayer.get('id'))
+    const remainingLayers = this.props.layers.delete(deletedLayer.id)
     this.props.onLayersChanged(remainingLayers)
   }
 
-  onLayerChanged(layer) {
-    const changedLayers = this.props.layers.set(layer.get('id'), layer)
-    this.props.onLayersChanged(changedLayers)
-  }
-
   render() {
-    const layerPanels = this.props.layers.toIndexedSeq().map((layer, index) => {
-      const layerId = layer.get('id')
+    const layerPanels = this.props.layers.map((layer, index) => {
+      const layerId = layer.id
       return <LayerListItem
         index={index}
         key={layerId}
         layerId={layerId}
-        layerType={layer.get('type')}
+        layerType={layer.type}
         onLayerSelected={this.props.onLayerSelected}
       />
     })
@@ -73,13 +67,8 @@ export default class LayerList extends React.Component {
   onSortEnd(move) {
     const { oldIndex, newIndex } = move
     if(oldIndex === newIndex) return
-
-    //TODO: Implement this more performant for immutable collections
-    // instead of converting back and forth
-    let layers = this.props.layers.toArray()
+    let layers = this.props.layers.slice(0)
     layers = arrayMove(layers, oldIndex, newIndex)
-    layers = Immutable.OrderedMap(layers.map(l => [l.get('id'), l]))
-
     this.props.onLayersChanged(layers)
   }
 
diff --git a/src/components/layers/LayerListItem.jsx b/src/components/layers/LayerListItem.jsx
index 782b1043..f23b4429 100644
--- a/src/components/layers/LayerListItem.jsx
+++ b/src/components/layers/LayerListItem.jsx
@@ -1,7 +1,5 @@
 import React from 'react'
-import PureRenderMixin from 'react-addons-pure-render-mixin'
 import Radium from 'radium'
-import Immutable from 'immutable'
 import Color from 'color'
 
 import Heading from 'rebass/dist/Heading'
@@ -38,11 +36,6 @@ class LayerListItem extends React.Component {
     onLayerSelected: React.PropTypes.func.isRequired,
   }
 
-  constructor(props) {
-    super(props)
-    this.shouldComponentUpdate = PureRenderMixin.shouldComponentUpdate.bind(this);
-  }
-
   render() {
     return <li
       key={this.props.layerId}
diff --git a/src/components/layers/SourceEditor.jsx b/src/components/layers/SourceEditor.jsx
index d5f76440..4c6165c7 100644
--- a/src/components/layers/SourceEditor.jsx
+++ b/src/components/layers/SourceEditor.jsx
@@ -1,6 +1,4 @@
 import React from 'react'
-import PureRenderMixin from 'react-addons-pure-render-mixin';
-import Immutable from 'immutable'
 
 import PropertyGroup from '../fields/PropertyGroup'
 import input from '../../config/input.js'
@@ -16,23 +14,18 @@ export default class SourceEditor extends React.Component {
 
     /** List of available sources in the style
      * https://www.mapbox.com/mapbox-gl-style-spec/#root-sources */
-    sources: React.PropTypes.instanceOf(Immutable.Map).isRequired,
+    sources: React.PropTypes.object.isRequired,
   }
 
-	constructor(props) {
-		super(props);
-		this.shouldComponentUpdate = PureRenderMixin.shouldComponentUpdate.bind(this);
-	}
-
   render() {
-		const options = this.props.sources.map((source, sourceId)=> {
+		const options = Object.keys(this.props.sources).map(sourceId => {
 			return <option key={sourceId} value={sourceId}>{sourceId}</option>
-		}).toIndexedSeq()
+		})
 
-    const layerOptions = this.props.sources.get(this.props.source, Immutable.Set()).map(vectorLayerId => {
+    const layerOptions = this.props.sources[this.props.source].map(vectorLayerId => {
       const id = vectorLayerId
 			return <option key={id} value={id}>{id}</option>
-		}).toIndexedSeq()
+		})
 
 	  return <div>
       <div style={input.property}>
diff --git a/src/components/map/Map.jsx b/src/components/map/Map.jsx
index 71382ed0..83387d47 100644
--- a/src/components/map/Map.jsx
+++ b/src/components/map/Map.jsx
@@ -1,17 +1,11 @@
 import React from 'react'
-import Immutable from 'immutable'
 
 export default class Map extends React.Component {
   static propTypes = {
-    mapStyle: React.PropTypes.instanceOf(Immutable.Map).isRequired,
+    mapStyle: React.PropTypes.object.isRequired,
     accessToken: React.PropTypes.string,
   }
 
-  shouldComponentUpdate(nextProps, nextState) {
-    //TODO: If we enable this React mixin for immutable comparison we can remove this?
-    return nextProps.mapStyle !== this.props.mapStyle
-  }
-
   render() {
     return <div
     ref={x => this.container = x}
diff --git a/src/components/map/MapboxGlMap.jsx b/src/components/map/MapboxGlMap.jsx
index ec85a898..5eaf3f48 100644
--- a/src/components/map/MapboxGlMap.jsx
+++ b/src/components/map/MapboxGlMap.jsx
@@ -23,7 +23,7 @@ export default class MapboxGlMap extends Map {
 
     //Mapbox GL now does diffing natively so we don't need to calculate
     //the necessary operations ourselves!
-    this.state.map.setStyle(style.toJSON(nextProps.mapStyle), { diff: true})
+    this.state.map.setStyle(nextProps.mapStyle, { diff: true})
   }
 
   componentDidMount() {
@@ -31,7 +31,7 @@ export default class MapboxGlMap extends Map {
 
     const map = new MapboxGl.Map({
       container: this.container,
-      style: style.toJSON(this.props.mapStyle),
+      style: this.props.mapStyle,
     });
 
     map.on("style.load", (...args) => {
diff --git a/src/components/modals/SettingsModal.jsx b/src/components/modals/SettingsModal.jsx
index ac3c29a3..3c4cc1b1 100644
--- a/src/components/modals/SettingsModal.jsx
+++ b/src/components/modals/SettingsModal.jsx
@@ -1,5 +1,4 @@
 import React from 'react'
-import Immutable from 'immutable'
 
 import Select from 'rebass/dist/Select'
 import Overlay from 'rebass/dist/Overlay'
@@ -15,7 +14,7 @@ import Input from 'rebass/dist/Input'
 
 class SettingsModal extends React.Component {
   static propTypes = {
-    mapStyle: React.PropTypes.instanceOf(Immutable.Map).isRequired,
+    mapStyle: React.PropTypes.object.isRequired,
     onStyleChanged: React.PropTypes.func.isRequired,
     open: React.PropTypes.bool.isRequired,
     toggle: React.PropTypes.func.isRequired,
@@ -47,31 +46,31 @@ class SettingsModal extends React.Component {
         <Input
           name="name"
           label="Name"
-          value={this.props.mapStyle.get('name')}
+          value={this.props.mapStyle.name}
           onChange={this.onChange.bind(this, "name")}
         />
         <Input
           name="owner"
           label="Owner"
-          value={this.props.mapStyle.get('owner')}
+          value={this.props.mapStyle.owner}
           onChange={this.onChange.bind(this, "owner")}
         />
         <Input
           name="sprite"
           label="Sprite URL"
-          value={this.props.mapStyle.get('sprite')}
+          value={this.props.mapStyle.sprite}
           onChange={this.onChange.bind(this, "sprite")}
         />
         <Input
           name="glyphs"
           label="Glyphs URL"
-          value={this.props.mapStyle.get('glyphs')}
+          value={this.props.mapStyle.glyphs}
           onChange={this.onChange.bind(this, "glyphs")}
         />
         <Input
           name="glyphs"
           label="Glyphs URL"
-          value={this.props.mapStyle.get('glyphs')}
+          value={this.props.mapStyle.glyphs}
           onChange={this.onChange.bind(this, "glyphs")}
         />
         <Select
diff --git a/src/components/modals/TilesetsModal.jsx b/src/components/modals/TilesetsModal.jsx
index 7f166101..d7ecb88c 100644
--- a/src/components/modals/TilesetsModal.jsx
+++ b/src/components/modals/TilesetsModal.jsx
@@ -1,5 +1,4 @@
 import React from 'react'
-import Immutable from 'immutable'
 
 import Overlay from 'rebass/dist/Overlay'
 import Panel from 'rebass/dist/Panel'
@@ -19,8 +18,7 @@ import theme from '../../config/rebass'
 
 class TilesetsModal extends React.Component {
   static propTypes = {
-    mapStyle: React.PropTypes.instanceOf(Immutable.Map).isRequired,
-    onStyleChanged: React.PropTypes.func.isRequired,
+    mapStyle: React.PropTypes.object.isRequired,
     open: React.PropTypes.bool.isRequired,
     toggle: React.PropTypes.func.isRequired,
   }
@@ -29,11 +27,6 @@ class TilesetsModal extends React.Component {
     super(props);
   }
 
-  onChange(property, e) {
-    const changedStyle = this.props.mapStyle.set(property, e.target.value)
-    this.props.onStyleChanged(changedStyle)
-  }
-
   render() {
     const tilesetOptions = publicTilesets.map(tileset => {
       return <div key={tileset.id} style={{
diff --git a/src/components/sources/editor.jsx b/src/components/sources/editor.jsx
index 9cf2c705..43f92b2b 100644
--- a/src/components/sources/editor.jsx
+++ b/src/components/sources/editor.jsx
@@ -1,5 +1,4 @@
 import React from 'react'
-import Immutable from 'immutable'
 
 import Input from 'rebass/dist/Input'
 import Toolbar from 'rebass/dist/Toolbar'
@@ -20,7 +19,7 @@ class UnsupportedSource extends React.Component {
 
 class VectorSource extends React.Component {
 	static propTypes = {
-		source: React.PropTypes.instanceOf(Immutable.Map).isRequired,
+		source: React.PropTypes.object.isRequired,
 		onSourceChanged: React.PropTypes.func.isRequired,
   }
 
@@ -45,7 +44,7 @@ class VectorSource extends React.Component {
 export class SourceEditor extends React.Component {
 	static propTypes = {
 		sourceId: React.PropTypes.string.isRequired,
-		source: React.PropTypes.instanceOf(Immutable.Map).isRequired,
+		source: React.PropTypes.object.isRequired,
 		onSourceChanged: React.PropTypes.func.isRequired,
 	}
 
diff --git a/src/components/sources/list.jsx b/src/components/sources/list.jsx
index 19b67fdf..cc6306e5 100644
--- a/src/components/sources/list.jsx
+++ b/src/components/sources/list.jsx
@@ -1,5 +1,4 @@
 import React from 'react'
-import Immutable from 'immutable'
 
 import Heading from 'rebass/dist/Heading'
 import Toolbar from 'rebass/dist/Toolbar'
@@ -13,7 +12,7 @@ import PureRenderMixin from 'react-addons-pure-render-mixin';
 // List of collapsible layer editors
 export class SourceList extends React.Component {
 	static propTypes = {
-		sources: React.PropTypes.instanceOf(Immutable.Map).isRequired,
+		sources: React.PropTypes.object.isRequired,
 		onSourcesChanged: React.PropTypes.func.isRequired,
 	}
 
diff --git a/src/libs/layerwatcher.js b/src/libs/layerwatcher.js
index 25712fdf..b6988299 100644
--- a/src/libs/layerwatcher.js
+++ b/src/libs/layerwatcher.js
@@ -1,6 +1,4 @@
-import Immutable from 'immutable'
 import throttle from 'lodash.throttle'
-import entries from 'lodash.topairs'
 
 /** Listens to map events to build up a store of available vector
  * layers contained in the tiles */
@@ -47,22 +45,15 @@ export default class LayerWatcher {
         this._vectorLayers[vectorLayerId] = knownProperties
       })
     })
-
-    console.log(this.vectorLayers.toJSON())
+    console.log(this.vectorLayers)
   }
 
   /** Access all known sources and their vector tile ids */
   get sources() {
-    return Immutable.Map(Object.keys(this._sources).map(key => {
-      return [key, Immutable.Set(this._sources[key])]
-    }))
+    return this._sources
   }
 
   get vectorLayers() {
-    return Immutable.Map(entries(this._vectorLayers).map(([key, layer]) => {
-      return [key, Immutable.Map(entries(layer).map(([propId, values]) => {
-        return [propId, Immutable.Set(Object.keys(values))]
-      }))]
-    }))
+    return this._vectorLayers
   }
 }
diff --git a/src/libs/style.js b/src/libs/style.js
index 902afc70..9d5b8032 100644
--- a/src/libs/style.js
+++ b/src/libs/style.js
@@ -1,68 +1,30 @@
 import React from 'react';
-import Immutable from 'immutable'
 import spec from 'mapbox-gl-style-spec/reference/latest.min.js'
 
-// Standard JSON to Immutable conversion except layers
-// are stored in an OrderedMap to make lookups id fast
-// It also ensures that every style has an id and
-// a created date for future reference
-function fromJSON(jsonStyle) {
-  if (typeof jsonStyle === 'string' || jsonStyle instanceof String) {
-    jsonStyle = JSON.parse(jsonStyle)
-  }
-
-  return Immutable.Map(Object.keys(jsonStyle).map(key => {
-    const val = jsonStyle[key]
-    if(key === "layers") {
-      return [key, Immutable.OrderedMap(val.map(l => [l.id, Immutable.fromJS(l)]))]
-    } else if(key === "sources" || key === "metadata" || key === "transition") {
-      return [key, Immutable.fromJS(val)]
-    } else {
-      return [key, val]
-    }
-  }))
-}
-
 // Empty style is always used if no style could be restored or fetched
-const emptyStyle = ensureMetadataExists(fromJSON({
+const emptyStyle = ensureMetadataExists({
   version: 8,
   sources: {},
   layers: [],
-}))
+})
 
 function ensureHasId(style) {
-  if(style.has('id')) return style
-  return style.set('id', Math.random().toString(36).substr(2, 9))
+  if('id' in style) return style
+  style.id = Math.random().toString(36).substr(2, 9)
+  return style
 }
 
 function ensureHasTimestamp(style) {
-  if(style.has('id')) return style
-  return style.set('created', new Date().toJSON())
+  if('created' in style) return style
+  style.created = new Date().toJSON()
+  return style
 }
 
 function ensureMetadataExists(style) {
   return ensureHasId(ensureHasTimestamp(style))
 }
 
-// Turns immutable style back into JSON with the original order of the
-// layers preserved
-function toJSON(mapStyle) {
-  const jsonStyle = {}
-  for(let [key, value] of mapStyle.entries()) {
-    if(key === "layers") {
-      jsonStyle[key] = value.toIndexedSeq().toJS()
-    } else if(key === 'sources' || key === "metadata" || key === "transition") {
-      jsonStyle[key] = value.toJS()
-    } else {
-      jsonStyle[key] = value
-    }
-  }
-  return jsonStyle
-}
-
 export default {
-  toJSON,
-  fromJSON,
   ensureMetadataExists,
   emptyStyle,
 }
diff --git a/src/libs/stylestore.js b/src/libs/stylestore.js
index 9927adac..6557b0f9 100644
--- a/src/libs/stylestore.js
+++ b/src/libs/stylestore.js
@@ -1,5 +1,4 @@
 import { colorizeLayers } from './style.js'
-import Immutable from 'immutable'
 import style from './style.js'
 
 const storagePrefix = "maputnik"
@@ -18,7 +17,7 @@ export function loadDefaultStyle(cb) {
 
   request.onload = () => {
     if (request.status >= 200 && request.status < 400) {
-      cb(style.ensureMetadataExists(style.fromJSON(request.responseText)))
+      cb(style.ensureMetadataExists(JSON.parse(request.responseText)))
     } else {
       cb(style.emptyStyle)
     }
@@ -104,15 +103,15 @@ export class StyleStore {
     const styleId = window.localStorage.getItem(storageKeys.latest)
     const styleItem = window.localStorage.getItem(styleKey(styleId))
 
-    if(styleItem) return cb(style.fromJSON(styleItem))
+    if(styleItem) return cb(JSON.parse(styleItem))
     cb(style.emptyStyle)
   }
 
   // Save current style replacing previous version
   save(mapStyle) {
-    const key = styleKey(mapStyle.get('id'))
-    window.localStorage.setItem(key, JSON.stringify(style.toJSON(mapStyle)))
-    window.localStorage.setItem(storageKeys.latest, mapStyle.get('id'))
+    const key = styleKey(mapStyle.id)
+    window.localStorage.setItem(key, JSON.stringify(mapStyle))
+    window.localStorage.setItem(storageKeys.latest, mapStyle.id)
     return mapStyle
   }
 }