These Soulkr Ninja Academy hoodies are super easy to use. Just put them on and enjoy the comfort and style. When it comes to washing, make sure to turn them inside out and wash in cold water with clothes of similar colors. Only use non - chlorine bleach if necessary. After washing, you can either hang them to dry for the best results or use the cool/low heat setting in the dryer. Don't use fabric softener as it can make the colors fade. Also, avoid ironing and dry cleaning these hoodies to keep them in good condition for a long time.