To use these tank tops, simply put them on and enjoy the comfort. For men and unisex sizes, you have a wide range from XS to 2XL. Women can choose from XS to 4XL. When it comes to washing, use cold water and turn the tops inside out. Wash them with clothes of similar colors. Only use non - chlorine bleach if necessary. After washing, hanging them to dry is the best way, but you can also use a dryer on cool or low heat. Remember, fabric softener can make the colors fade, so avoid it. And don't try to iron or dry clean these tank tops to keep them in good condition.