This sparkly Mickey Mouse Mommy of the Birthday Boy iron on transfer is created with Siser Glitter vinyl. It is easy to iron on to a shirt with a regular household iron. The design is 9" wide x 4.5" tall. Siser Vinyl may be applied to 100% cotton, 100% polyester or cotton/polyester blends. It is not meant for stretch fabrics. It is easy to launder.A full set of instructions will accompany your purchase, together with an ironing "top sheet" (or you can use your own parchment paper).