diff --git a/src/components/SkinDropZone.svelte b/src/components/SkinDropZone.svelte
index 9d08c69..ebb9b5f 100644
--- a/src/components/SkinDropZone.svelte
+++ b/src/components/SkinDropZone.svelte
@@ -1,5 +1,5 @@
 <script lang="ts">
-    import { writable } from "svelte/store";
+    import { writable, type Writable } from "svelte/store";
     import DropZone from "./DropZone.svelte";
     import { createEventDispatcher } from "svelte";
     import demoSkin from "$lib/assets/demo-skin.png";
@@ -8,6 +8,7 @@
 
     let pickerHovered = writable<boolean>(false);
     let filePicker: HTMLInputElement;
+    export let slimArms: Writable<boolean> | undefined;
 
     function pickFile() {
         filePicker.click();
@@ -34,6 +35,7 @@
         let file = new File([data], "demo-skin.png");
         list.items.add(file);
         
+        $slimArms = true;
         dispatch("files", list.files);
     }
 </script>
diff --git a/src/routes/tools/region-eraser/+page.svelte b/src/routes/tools/region-eraser/+page.svelte
index d1649a5..46df5b2 100644
--- a/src/routes/tools/region-eraser/+page.svelte
+++ b/src/routes/tools/region-eraser/+page.svelte
@@ -29,6 +29,8 @@
     let imgContainer: HTMLDivElement;
     let skinDropZone: SkinDropZone;
 
+    let demoUsesSlimSkin = writable(false);
+
     async function initWasm() {
         if (!browser) {
             return Promise.resolve();
@@ -146,7 +148,7 @@
         if (!$workspace || !$lastSkin) return;
 
         const existingRegions: EraseRegion[] = $workspace.get_regions();
-        
+
         document.querySelectorAll(".region.overlapping").forEach((element) => {
             element.classList.remove("overlapping");
         });
@@ -306,7 +308,13 @@
             {/if}
         </div>
 
-        <SkinDropZone bind:this={skinDropZone} on:files={handleSkinFiles} />
+        <SkinDropZone bind:this={skinDropZone} slimArms={demoUsesSlimSkin} on:files={handleSkinFiles} />
+
+        <div class="flex gap-2">
+            <label for="slim-skin">Use slim skin</label>
+            <input type="checkbox" id="slim-skin" bind:checked={$demoUsesSlimSkin} />
+        </div>
+
         <!--
             Instructions:
             - Drag and drop a skin file
@@ -368,9 +376,9 @@
             alt="Minecraft Skin"
         />
     </div>
-    
+
     <div>
-        <SkinCanvas skin={$lastSkin}/>
+        <SkinCanvas skin={$lastSkin} slimArms={$demoUsesSlimSkin} />
     </div>
 </div>
 
@@ -454,11 +462,10 @@
 <svelte:document on:keyup={handleKeyPress} />
 
 <style lang="postcss">
-    
     .region {
         --border-color: rgb(var(--accent-500));
         --background-color: theme("colors.secondary.500/20%");
-        
+
         background-color: var(--background-color);
 
         background-image: linear-gradient(90deg, var(--border-color) 50%, transparent 50%),