diff --git a/demo/Ursa.Demo/Pages/NumericUpDownDemo.axaml b/demo/Ursa.Demo/Pages/NumericUpDownDemo.axaml
index 610c37a..d854971 100644
--- a/demo/Ursa.Demo/Pages/NumericUpDownDemo.axaml
+++ b/demo/Ursa.Demo/Pages/NumericUpDownDemo.axaml
@@ -6,6 +6,7 @@
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
     xmlns:u="https://irihi.tech/ursa"
     xmlns:vm="using:Ursa.Demo.ViewModels"
+    xmlns:system="clr-namespace:System;assembly=System.Runtime"
     d:DesignHeight="450"
     d:DesignWidth="800"
     x:CompileBindings="True"
@@ -34,6 +35,7 @@
                 FontFamily="{Binding FontFamily, Mode=OneWay}"
                 FormatString="{Binding FormatString}"
                 InnerLeftContent="{Binding InnerLeftContent}"
+                InnerRightContent="{Binding InnerRightContent}"
                 IsEnabled="{Binding IsEnable}"
                 IsReadOnly="{Binding IsReadOnly}"
                 Maximum="{Binding Maximum}"
@@ -125,6 +127,24 @@
                     Step="1"
                     Watermark="AllowHexSpecifier"
                     Value="2" />
+                <u:Divider Content="Sizes" />
+                <u:NumericUIntUpDown
+                    Classes="Small"
+                    Step="1"
+                    Watermark="Small"/>
+                <u:NumericUIntUpDown
+                    Classes="Large"
+                    Step="1"
+                    Margin="0 8 0 0"
+                    Watermark="Large"/>
+                <u:Divider Content="Error" />
+                <u:NumericUIntUpDown
+                    Step="1"
+                    Watermark="Validation Error">
+                    <DataValidationErrors.Error>
+                        <system:Exception/>
+                    </DataValidationErrors.Error>
+                </u:NumericUIntUpDown>
             </StackPanel>
         </Grid>
 
diff --git a/demo/Ursa.Demo/ViewModels/NumericUpDownDemoViewModel.cs b/demo/Ursa.Demo/ViewModels/NumericUpDownDemoViewModel.cs
index a4f4435..d7873bf 100644
--- a/demo/Ursa.Demo/ViewModels/NumericUpDownDemoViewModel.cs
+++ b/demo/Ursa.Demo/ViewModels/NumericUpDownDemoViewModel.cs
@@ -24,6 +24,7 @@ public partial class NumericUpDownDemoViewModel : ObservableObject
     [ObservableProperty] private Array _arrayHorizontalContentAlignment;
     [ObservableProperty] private HorizontalAlignment _horizontalContentAlignment = HorizontalAlignment.Center;
     [ObservableProperty] private object? _innerLeftContent = "obj:0x";
+    [ObservableProperty] private object? _innerRightContent = "%";
     [ObservableProperty] private string _watermark = "Water mark showed";
     [ObservableProperty] private string _formatString = "X8";
     [ObservableProperty] private Array _arrayParsingNumberStyle;
diff --git a/src/Ursa.Themes.Semi/Controls/KeyGestureInput.axaml b/src/Ursa.Themes.Semi/Controls/KeyGestureInput.axaml
index 3adc90d..9548bd9 100644
--- a/src/Ursa.Themes.Semi/Controls/KeyGestureInput.axaml
+++ b/src/Ursa.Themes.Semi/Controls/KeyGestureInput.axaml
@@ -57,9 +57,10 @@
                                 Margin="0,0,8,0"
                                 HorizontalAlignment="Right"
                                 Command="{Binding $parent[u:KeyGestureInput].Clear}"
+                                Content="{DynamicResource IconButtonClearData}"
                                 Focusable="False"
                                 IsVisible="False"
-                                Theme="{DynamicResource InputClearButton}" />
+                                Theme="{DynamicResource InnerIconButton}" />
                         </Grid>
                     </Panel>
                 </Border>
diff --git a/src/Ursa.Themes.Semi/Controls/NumericUpDown.axaml b/src/Ursa.Themes.Semi/Controls/NumericUpDown.axaml
index 31824c8..bbdf6af 100644
--- a/src/Ursa.Themes.Semi/Controls/NumericUpDown.axaml
+++ b/src/Ursa.Themes.Semi/Controls/NumericUpDown.axaml
@@ -4,29 +4,9 @@
     xmlns:u="https://irihi.tech/ursa">
     <!--  Add Resources Here  -->
 
-    <ControlTheme x:Key="InputClearButton" TargetType="Button">
-        <Setter Property="Button.Foreground" Value="{DynamicResource TextBoxButtonDefaultForeground}" />
-        <Setter Property="Button.Cursor" Value="Hand" />
-        <Setter Property="Button.Template">
-            <ControlTemplate TargetType="Button">
-                <!--  Background must be transparent or hit test will fail  -->
-                <ContentControl Background="Transparent">
-                    <PathIcon
-                        Width="16"
-                        Height="16"
-                        Data="{DynamicResource TextBoxClearButtonData}"
-                        Foreground="{TemplateBinding Foreground}" />
-                </ContentControl>
-            </ControlTemplate>
-        </Setter>
-        <Style Selector="^:pointerover">
-            <Setter Property="Foreground" Value="{DynamicResource TextBoxButtonPointeroverForeground}" />
-        </Style>
-    </ControlTheme>
-
     <ControlTheme x:Key="{x:Type u:NumericUpDown}" TargetType="{x:Type u:NumericUpDown}">
         <Setter Property="CornerRadius" Value="{DynamicResource NumericUpDownCornerRadius}" />
-        <Setter Property="MinHeight" Value="{DynamicResource NumericUpDownDefaultHeight}"></Setter>
+        <Setter Property="MinHeight" Value="{DynamicResource NumericUpDownDefaultHeight}" />
         <Setter Property="Template">
             <ControlTemplate TargetType="u:NumericUpDown">
                 <DataValidationErrors>
@@ -52,6 +32,7 @@
                                 FontSize="{TemplateBinding FontSize}"
                                 Foreground="{TemplateBinding Foreground}"
                                 InnerLeftContent="{TemplateBinding InnerLeftContent}"
+                                InnerRightContent="{TemplateBinding InnerRightContent}"
                                 TextWrapping="NoWrap"
                                 Theme="{DynamicResource NonErrorTextBox}"
                                 Watermark="{TemplateBinding Watermark}" />
@@ -68,7 +49,8 @@
                                 Command="{Binding $parent[u:NumericUpDown].Clear}"
                                 Focusable="False"
                                 IsVisible="False"
-                                Theme="{StaticResource InputClearButton}" />
+                                Content="{DynamicResource IconButtonClearData}"
+                                Theme="{DynamicResource InnerIconButton}" />
                         </Panel>
                     </ButtonSpinner>
                 </DataValidationErrors>
@@ -83,5 +65,12 @@
                 <Setter Property="IsVisible" Value="True" />
             </Style>
         </Style>
+        
+        <Style Selector="^.Large">
+            <Setter Property="MinHeight" Value="{DynamicResource NumericUpDownLargeHeight}" />
+        </Style>
+        <Style Selector="^.Small">
+            <Setter Property="MinHeight" Value="{DynamicResource NumericUpDownSmallHeight}" />
+        </Style>
     </ControlTheme>
 </ResourceDictionary>
diff --git a/src/Ursa/Controls/NumericUpDown/NumericUpDownBase.cs b/src/Ursa/Controls/NumericUpDown/NumericUpDownBase.cs
index ed0a380..e69d800 100644
--- a/src/Ursa/Controls/NumericUpDown/NumericUpDownBase.cs
+++ b/src/Ursa/Controls/NumericUpDown/NumericUpDownBase.cs
@@ -17,7 +17,7 @@ namespace Ursa.Controls;
 [TemplatePart(PART_Spinner, typeof(ButtonSpinner))]
 [TemplatePart(PART_TextBox, typeof(TextBox))]
 [TemplatePart(PART_DragPanel, typeof(Panel))]
-public abstract class NumericUpDown : TemplatedControl, IClearControl
+public abstract class NumericUpDown : TemplatedControl, IClearControl, IInnerContentControl
 {
     public const string PART_Spinner = "PART_Spinner";
     public const string PART_TextBox = "PART_TextBox";
@@ -62,8 +62,9 @@ public abstract class NumericUpDown : TemplatedControl, IClearControl
         set => SetValue(HorizontalContentAlignmentProperty, value);
     }
 
-    public static readonly StyledProperty<object?> InnerLeftContentProperty = AvaloniaProperty.Register<NumericUpDown, object?>(
-        nameof(InnerLeftContent));
+    public static readonly StyledProperty<object?> InnerLeftContentProperty =
+        AvaloniaProperty.Register<NumericUpDown, object?>(
+            nameof(InnerLeftContent));
 
     public object? InnerLeftContent
     {
@@ -71,6 +72,16 @@ public abstract class NumericUpDown : TemplatedControl, IClearControl
         set => SetValue(InnerLeftContentProperty, value);
     }
 
+    public static readonly StyledProperty<object?> InnerRightContentProperty =
+        AvaloniaProperty.Register<NumericUpDown, object?>(
+            nameof(InnerRightContent));
+
+    public object? InnerRightContent
+    {
+        get => GetValue(InnerRightContentProperty);
+        set => SetValue(InnerRightContentProperty, value);
+    }
+
     public static readonly StyledProperty<string?> WatermarkProperty = AvaloniaProperty.Register<NumericUpDown, string?>(
         nameof(Watermark));