To use these shirts, simply put them on and enjoy the comfort. When it's time to wash, turn them inside out and machine wash in cold water with similar colors. Only use non - chlorine bleach if necessary. For the best look and longevity of the shirts, hang them to dry. If you're in a hurry, you can tumble dry on cool or low heat. Remember, fabric softener can make the colors fade, so it's best to skip it. Also, don't iron or dry clean these shirts to keep them in good condition.