Expressions Vinyl - Black - 9in. x 12in. 5-pack Siser Glitter Iron-on Heat Transfer Vinyl Sheets 5 Sheets of 9"x12"(+/- 0.5") of Siser Glitter Heat Transfer Vinyl (AKA T-shirt vinyl). Siser's new Glitter line of heat transfer vinyl is the perfect material to add a little sparkle to your apparel! Glitter is CPSIA Certified so that even kids clothing can look amazing. Siser's glitter material peels HOT so you can get the job done quicker. Expressions Vinyl's custom packaging provides step-by-step full color instructions!