To use these T - shirts, simply put them on and enjoy the comfort. When it comes to washing, turn them inside out and wash in cold water with similar colors. Only use non - chlorine bleach if necessary. After washing, it's best to hang them 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 don't use it. Also, avoid ironing and dry cleaning to keep the shirts in good condition.