Disney Hannah Montana Pillowcase Art Each kit includes one permanent-inked, screen printed, polyester/ cotton pillowcase, 16 Non-toxic crayons and instructions. EASY AS 1-2-3. 1-Color printed design, 2-Add your own artistic touches, 3-Heat set you masterpiece, Adult supervision required for heat setting design. Colorfast and washable after setting with heat. Approximate size: 20 x 30". Sales limited to USA and Canada only.