To use these MarianoSan Mistress tank tops, just put them on and enjoy the comfort. For men and unisex sizes, you have a wide range from XS to 2XL, and women can choose from XS to 4XL. When it comes to washing, remember to use cold water and turn the tops inside out. Wash them with similar colors to prevent color bleeding. Only use non - chlorine bleach if really needed. After washing, it's best to hang them to dry, but you can also use the tumble dryer on a cool or low - heat setting. Don't use fabric softener because it might make the colors fade. And don't iron or dry clean these tank tops to keep them in good condition.