diff --git a/EbayListingTool/Views/SingleItemView.xaml b/EbayListingTool/Views/SingleItemView.xaml
index c122f03..78a37b9 100644
--- a/EbayListingTool/Views/SingleItemView.xaml
+++ b/EbayListingTool/Views/SingleItemView.xaml
@@ -204,6 +204,55 @@
                             </ListBox.ItemTemplate>
                         </ListBox>
 
+                        <!-- Item Specifics (Aspects) panel — revealed after category is selected -->
+                        <Border x:Name="AspectsPanel" Visibility="Collapsed"
+                                CornerRadius="4" Margin="0,10,0,0" Padding="12,10"
+                                BorderBrush="{DynamicResource MahApps.Brushes.Gray7}" BorderThickness="1">
+                            <StackPanel>
+                                <Grid Margin="0,0,0,8">
+                                    <Grid.ColumnDefinitions>
+                                        <ColumnDefinition Width="*"/>
+                                        <ColumnDefinition Width="Auto"/>
+                                    </Grid.ColumnDefinitions>
+                                    <StackPanel Orientation="Horizontal">
+                                        <mah:ProgressRing x:Name="AspectsSpinner" Width="14" Height="14"
+                                                          Margin="0,0,6,0" VerticalAlignment="Center"
+                                                          Visibility="Collapsed"/>
+                                        <TextBlock Text="Item Specifics" FontWeight="SemiBold" FontSize="12"
+                                                   VerticalAlignment="Center"
+                                                   Foreground="{DynamicResource MahApps.Brushes.Gray2}"/>
+                                        <TextBlock x:Name="AspectsRequiredNote"
+                                                   Text=" (required fields marked *)"
+                                                   FontSize="11" VerticalAlignment="Center"
+                                                   Foreground="{DynamicResource MahApps.Brushes.Gray5}"
+                                                   Visibility="Collapsed"/>
+                                    </StackPanel>
+                                    <Button Grid.Column="1" x:Name="AiAspectsBtn"
+                                            Style="{StaticResource AiButton}"
+                                            Height="26" Padding="10,0" FontSize="11"
+                                            Click="AiAspects_Click"
+                                            ToolTip="Let AI suggest values from your title and description">
+                                        <StackPanel Orientation="Horizontal">
+                                            <mah:ProgressRing x:Name="AspectsAiSpinner" Width="11" Height="11"
+                                                              Margin="0,0,4,0" Foreground="White"
+                                                              Visibility="Collapsed"/>
+                                            <iconPacks:PackIconMaterial x:Name="AspectsAiIcon" Kind="AutoFix"
+                                                                        Width="11" Height="11" Margin="0,0,4,0"
+                                                                        VerticalAlignment="Center"/>
+                                            <TextBlock Text="AI Suggest" VerticalAlignment="Center"/>
+                                        </StackPanel>
+                                    </Button>
+                                </Grid>
+                                <ItemsControl x:Name="AspectsItemsControl">
+                                    <ItemsControl.ItemsPanel>
+                                        <ItemsPanelTemplate>
+                                            <WrapPanel Orientation="Horizontal"/>
+                                        </ItemsPanelTemplate>
+                                    </ItemsControl.ItemsPanel>
+                                </ItemsControl>
+                            </StackPanel>
+                        </Border>
+
                         <!-- Condition + Format -->
                         <Grid Margin="0,10,0,0">
                             <Grid.ColumnDefinitions>
@@ -311,6 +360,8 @@
                                 <ColumnDefinition Width="*"/>
                                 <ColumnDefinition Width="12"/>
                                 <ColumnDefinition Width="*"/>
+                                <ColumnDefinition Width="16"/>
+                                <ColumnDefinition Width="Auto"/>
                             </Grid.ColumnDefinitions>
 
                             <!-- Price with inline AI button -->
@@ -352,7 +403,7 @@
 
                             <StackPanel Grid.Column="4">
                                 <TextBlock Style="{StaticResource FieldLabel}" Text="Postage"/>
-                                <ComboBox x:Name="PostageBox">
+                                <ComboBox x:Name="PostageBox" SelectionChanged="PostageBox_SelectionChanged">
                                     <ComboBoxItem Content="Royal Mail 1st Class (~£1.55)" IsSelected="True"/>
                                     <ComboBoxItem Content="Royal Mail 2nd Class (~£1.20)"/>
                                     <ComboBoxItem Content="Royal Mail Tracked 24 (~£2.90)"/>
@@ -361,6 +412,14 @@
                                     <ComboBoxItem Content="Collection Only"/>
                                 </ComboBox>
                             </StackPanel>
+
+                            <StackPanel Grid.Column="6">
+                                <TextBlock Style="{StaticResource FieldLabel}" Text="Shipping Cost (£)"/>
+                                <mah:NumericUpDown x:Name="ShippingCostBox"
+                                                   Minimum="0" Maximum="99" StringFormat="F2"
+                                                   Interval="0.50" Value="0"
+                                                   Width="110" HorizontalAlignment="Left"/>
+                            </StackPanel>
                         </Grid>
 
                         <!-- Postcode — narrower input, left-aligned -->
diff --git a/EbayListingTool/Views/SingleItemView.xaml.cs b/EbayListingTool/Views/SingleItemView.xaml.cs
index bce2b3d..6cae1b3 100644
--- a/EbayListingTool/Views/SingleItemView.xaml.cs
+++ b/EbayListingTool/Views/SingleItemView.xaml.cs
@@ -691,4 +691,15 @@ public partial class SingleItemView : UserControl
         => MessageBox.Show(message, title, MessageBoxButton.OK, MessageBoxImage.Warning);
 
     private MainWindow? GetWindow() => Window.GetWindow(this) as MainWindow;
+
+    private void PostageBox_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
+    {
+        // TODO: Task 5 — update ShippingCostBox default based on selected postage option
+    }
+
+    private async void AiAspects_Click(object sender, RoutedEventArgs e)
+    {
+        // TODO: Task 5 — call EbayAspectsService.SuggestAspectsAsync and populate AspectsItemsControl
+        await Task.CompletedTask;
+    }
 }