diff --git a/index.html b/index.html
index b488a7f..5aa74f4 100644
--- a/index.html
+++ b/index.html
@@ -1182,9 +1182,7 @@ <h2>
         [Exposed=Window, SecureContext]
         dictionary GamepadTouch {
           unsigned long touchId;
-          octet surfaceId;
           Float32Array position;
-          Uint32Array surfaceDimensions;
         };
       </pre>
       <dl>
@@ -1206,12 +1204,6 @@ <h2>
           </ul>{{GamepadTouch/touchId}} SHOULD be set to a default value of 0
           when a new {{Gamepad}} object is created.
         </dd>
-        <dt>
-          <dfn>surfaceId</dfn>
-        </dt>
-        <dd>
-          Unique id of the surface that generated the touch event.
-        </dd>
         <dt>
           <dfn>position</dfn>
         </dt>
@@ -1222,6 +1214,34 @@ <h2>
           Along the y-axis, -1.0 references the topmost coordinate and 1.0
           references the bottommost coordinate. MUST be a two-element array.
         </dd>
+      </dl>
+    </section>
+    <section data-dfn-for="GamepadSurface">
+      <h2>
+        <dfn>GamepadSurface</dfn> dictionary
+      </h2>
+      <p>
+        This dictionary defines a single surface on a gamepad device that
+        supports input. The event consists of a touch id that uniquely
+        identifies the touch point from the time the input medium (e.g. finger,
+        stylus, etc) makes contact with the touch device, up to the time the
+        input medium is no longer making contact with the touch device.
+      </p>
+      <pre class="idl">
+        [Exposed=Window, SecureContext]
+        dictionary GamepadSurface {
+          octet surfaceId;
+          FrozenArray&lt;GamepadTouch&gt;? touches;
+          Uint32Array surfaceDimensions;
+        };
+      </pre>
+      <dl>
+        <dt>
+          <dfn>surfaceId</dfn>
+        </dt>
+        <dd>
+          Unique id of the surface that generated the touch event.
+        </dd>
         <dt>
           <dfn>surfaceDimensions</dfn>
         </dt>