These Ilustrata S-Head hoodies are super easy to use. Just put them on and enjoy the comfort. For sizing, you can choose from S to 4XL. When it's time to clean them, remember to machine wash cold, and turn them inside out. Wash with like colors to prevent color bleeding. Only use non - chlorine bleach if necessary. Hanging them to dry is the best way to keep their shape and color, but if you're in a hurry, you can tumble dry on cool or low heat. Don't use fabric softener as it can fade the colors. Also, stay away from ironing and dry cleaning as these can damage the fabric and the prints on the hoodies.