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