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