To use these tank tops, simply put them on and enjoy their comfort. For men and unisex sizes, you'll feel the softness of the 4.2 - ounce cotton right away. Women will love the feminine fit of the 5.4 - ounce cotton tank tops. When it's time to clean them, machine wash cold and turn them inside out. Wash with clothes of similar colors. Only use non - chlorine bleach if necessary. After washing, it's best to hang them to dry. You can also tumble dry on a cool or low - heat setting. But be careful not to use fabric softener as it might make the colors fade. And remember, don't iron or dry clean these tank tops to keep them in good condition.