To use these men's T-shirts, simply put them on and enjoy the comfort. When it's time to clean them, machine wash cold, turning the shirts inside out and washing with similar colors. Only use non - chlorine bleach if necessary. After washing, you can hang them to dry for the best results, or you can tumble dry on cool or low heat. Remember, fabric softener can make the colors fade, so it's best to avoid it. Also, don't iron or dry clean these shirts to keep them in good condition.