This heat transfer vinyl allows you to use your sublimation inks and apply to cotton or coloured polyester shirts. Without this you can only sublimate on polyester or glitter vinyl. But if you want to use a different material or colour and don't want the sparkle this is the perfect solution. Because you apply this at a low temperature of just 311 degrees, you can also apply it to tri blends and rayon successfully.
EasySubli mask is needed if you have small pieces that you want to keep in place, just like your tack on your htv. Sold seperately with link below.
Application instructions as per the manufacture
EasySubli® Application Directions for a Heat Press