To use these men's t-shirts, simply put them on and enjoy their comfort. When it's time to clean them, machine wash them cold inside out with clothes of similar colors. Only use non - chlorine bleach if necessary. After washing, it's best to hang them to dry. But if you're in a hurry, you can tumble dry on cool or low heat. Remember, don't use fabric softener as it can make the colors fade. Also, avoid ironing and dry cleaning to keep the shirts in good condition.