Decal paper is a special type of paper used for creating custom decals or stickers. It is coated with a layer that allows ink to adhere well, making it suitable for printing images or designs. Once printed, the decal can be cut out and applied to various surfaces, such as glass, plastic, or wood. There are different types of decal paper, including water-slide and vinyl options. Water-slide decal paper requires soaking in water before application, while vinyl decal paper is adhesive and can be directly applied. Both types are popular for crafting, personalizing items, and creating unique decorations.