Window Stick-On is a type of DECAL that can be applied to windows. It is a thin, adhesive-backed material that can be cut into any shape or size and then stuck onto the window. The DECAL is usually made of vinyl or plastic and is designed to be durable and long-lasting. It is often used for decorative purposes, such as displaying logos or artwork, or for advertising purposes. Window Stick-Ons are also popular for privacy purposes, as they can be used to block out light or obscure views from outside.