These Typhoonic Art tank tops are really easy to use. Just put them on and enjoy the comfort! When it comes to sizing, the men's and unisex ones go from XS to 2XL, and the women's ones from XS to 4XL, so you can pick the right fit for you. As for care, machine wash them cold and turn them inside out. Wash them with clothes of similar colors. Only use non - chlorine bleach if needed. 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 because it might make the colors fade. And stay away from ironing and dry cleaning these tank tops to keep them in great shape.