Using your Soulkr Kinetic Card men's t - shirts is simple. Just put them on and enjoy their comfort. When it's time to wash, turn them inside out and machine wash 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. Be careful not to use fabric softener as it can make the colors fade. Also, don't iron or dry clean these shirts to keep them in good condition.