Our custom window clings are made from a clear transparent vinyl. The material itself is a non-adhesive window cling signage option. This means it contains no adhesive glues which allows for easy installation, removal, and reuse. Instead, these custom clings adhere to the surface of the window due to the vinyl working like mini-suction cups. These window clings start completely transparent. Thus, by default, the background of your sign will be clear (as indicated by the grey and white checkered background on our design tool). If you wish to have a solid colored background you’ll need to change your background color during the design process or simply select our opaque cling. If you are wanting a clear background please note that files uploaded with solid backgrounds will NOT be clear. Please use a transparent PNG file or contact us for free design services if you need help