To use these t - shirts, simply put them on and enjoy the comfort. When it comes to washing, turn them inside out and wash in cold water with similar colors. Only use non - chlorine bleach if necessary. After washing, you can either hang them to dry for the best result or tumble dry on cool or low heat. Remember, fabric softener can make the colors fade, so it's better to skip it. And never iron or dry clean these shirts to keep them in good condition.