Most application mask in the industry are manufactured to transfer sign vinyl - which doesn't require heat. These types of masking materials are not compatible with heat transfer vinyl as they leave residue on the garment after heat application. Additionally peeling away the incompatible tape may be difficult and can slow down the production process. So what's a large format owner to do? Both the Siser & Roland Masking tapes are formulated to work in conjunction with their respective digital media. Both are a clear mask that allow you to accurately palce the image on the garment and release easily after heat application without any residue left behind.