To use these Ukiyo Kid men's T-shirts, just put them on and enjoy the comfort. When it comes to washing, remember to turn them inside out and wash them in cold water with clothes of similar colors. Only use non - chlorine bleach if needed. After washing, you can either hang them to dry for the best results or tumble dry on cool or low heat. Don't use fabric softener as it can make the colors fade. And don't iron or dry clean these shirts to keep them in good condition.