To use these Ilustrata tank tops, simply put them on and enjoy the comfort! For men and unisex styles, you can choose from sizes XS to 2XL, while women have sizes from XS to 4XL to pick from. When it comes to maintenance, wash them in cold water inside out with clothes of similar colors. Only use non - chlorine bleach if needed. After washing, it's best to hang them to dry. You can also tumble dry on cool or low heat. Just be careful not to use fabric softener because it can make the colors fade. And remember, don't iron or dry clean these tank tops to keep them in good condition.