Most application masks in the industry are manufactured to transfer sign vinyl – which doesn’t require heat. These types of masking materials aren’t recommended for heat transfer vinyl as they will leave residue on the garment. Additionally, the tape may be difficult to remove which slows down the production process. Siser spent considerable time formulating masking materials that work in conjunction with our printable heat transfer materials. These CLEAR masks allows you to accurately place the image on the garment, then releases easily after heat application.