# Navigation Button ## Content The RadialMenu's **Navigation Button** is the first thing a user will see when they right tap the application. You can customize the Navigation Button with the **RadialMenu**'s [Icon](/componentone/api/wpf/online-menu5/dotnet-api/C1.WPF.Menu/C1.WPF.Menu.C1RadialMenu.Icon.html) property and [NavigationButtonRelativeSize](/componentone/api/wpf/online-menu5/dotnet-api/C1.WPF.Menu/C1.WPF.Menu.C1RadialMenu.NavigationButtonRelativeSize.html) property. The **NavigationButtonRelativeSize** property allows you to set the Navigation Button's size relative to the size of the **RadialMenu**. By default, this property is set to 0.15. For example, this is the default Navigation Button, with the **NavigationButtonRelativeSize** set to 0.15: ![](https://cdn.mescius.io/document-site-files/images/d5a2d4a0-cda2-4410-85e8-b185436bedb1/images/radialmenu/defaultnavbutton.png) Here's the Navigation Button when you set the NavigationButtonRelativeSize property to 0.45: ![](https://cdn.mescius.io/document-site-files/images/d5a2d4a0-cda2-4410-85e8-b185436bedb1/images/radialmenu/navbutton45.png) You can also change the **Icon** property. By default, the **Icon** property is set to "A". Here's the default Navigation Button with the **Icon** property changed, and the **NavigationButtonRelativeSize** property set to 0.25: ![](https://cdn.mescius.io/document-site-files/images/d5a2d4a0-cda2-4410-85e8-b185436bedb1/images/radialmenu/navbutton25.png) To change the size of the Navigation Button, or to change the **Icon** property, you can reference the following XAML: ```xml ```