To use these men's t - shirts, simply put them on and enjoy the comfort. When it's time to clean, remember to machine wash them cold, turning them inside out and washing with like colors. Only use non - chlorine bleach if needed. After washing, it's best to hang them dry, but you can also tumble dry on cool or low heat. Avoid using fabric softener as it can fade the colors. And don't try to iron or dry clean these shirts, as it might damage the fabric.