diff --git a/packages/stream_core_flutter/lib/src/components/common/stream_checkbox.dart b/packages/stream_core_flutter/lib/src/components/common/stream_checkbox.dart
index 066f6ec..8bf6a02 100644
--- a/packages/stream_core_flutter/lib/src/components/common/stream_checkbox.dart
+++ b/packages/stream_core_flutter/lib/src/components/common/stream_checkbox.dart
@@ -189,7 +189,7 @@ class DefaultStreamCheckbox extends StatelessWidget {
         },
         isSelected: props.value,
         iconSize: effectiveCheckSize,
-        icon: Icon(icons.checkmark2),
+        icon: Icon(icons.checkmark2Small),
         style: ButtonStyle(
           tapTargetSize: .shrinkWrap,
           visualDensity: .standard,
diff --git a/packages/stream_core_flutter/lib/src/components/message_composer/message_composer_input.dart b/packages/stream_core_flutter/lib/src/components/message_composer/message_composer_input.dart
index 989f9c6..faf8f7e 100644
--- a/packages/stream_core_flutter/lib/src/components/message_composer/message_composer_input.dart
+++ b/packages/stream_core_flutter/lib/src/components/message_composer/message_composer_input.dart
@@ -2,6 +2,8 @@ import 'package:flutter/material.dart';
 
 import '../../../stream_core_flutter.dart';
 
+/// A widget that represents the message composer input area.
+/// This usually contains the input field and the send or microphone button.
 class StreamMessageComposerInput extends StatelessWidget {
   const StreamMessageComposerInput({
     super.key,
@@ -50,7 +52,7 @@ class StreamMessageComposerInput extends StatelessWidget {
               Expanded(
                 child:
                     inputBody ??
-                    _MessageComposerInputField(
+                    StreamMessageComposerInputField(
                       controller: controller,
                       placeholder: placeholder,
                       focusNode: focusNode,
@@ -65,8 +67,10 @@ class StreamMessageComposerInput extends StatelessWidget {
   }
 }
 
-class _MessageComposerInputField extends StatelessWidget {
-  const _MessageComposerInputField({
+/// A widget that represents the actual text input field for the message composer.
+class StreamMessageComposerInputField extends StatelessWidget {
+  const StreamMessageComposerInputField({
+    super.key,
     required this.controller,
     required this.placeholder,
     this.focusNode,
@@ -78,8 +82,6 @@ class _MessageComposerInputField extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    // TODO: fully implement the input field
-
     final composerBorderRadius = context.streamRadius.xxxl;
     final inputTheme = context.streamInputTheme;
     final inputDefaults = InputThemeDefaults(context: context).data;