DritzÂ® Iron On Numbers, Letters and Graphics are a quick and easy way to personalize home decor projects, backpacks, tote bags, jackets, T-shirts, and other clothing and craft items. Bonds permanently to fabric and paper. Not recommended for synthetic fabrics. Turn garment inside out and machine wash and dry. For best results read and follow all instructions. Letters Color In Hippie Clear/Black- Great for T shirts, room decor and accessories! Not recommended for 100 percent synthetic fabrics. These letters are approximately 1.5" wide on the bottom and taper up to have a smaller top, each letter is ready to be colored in. One to two of each letter.