Siser Easyweed 12x24 heat transfer vinyl sheets (i.e. T-shirt vinyl, Iron-on vinyl) come with a heat activated adhesive on one side. The other side (which will be the exposed side upon application) has a clear carrier sheet that provides a way to keep everything intact until application. All cuts will need to be mirrored (flipped) as you are cutting it from the reverse side. Siser Easyweed heat transfer vinyl sheets is compatible with all personal hobby and craft cutters, and can be used in many applications including shirts, hats, shoes, bags or most anything that can withstand the application temperature.