Using these 'Soul of Zero Suit' women's T - shirts and Premium T - shirts is as easy as putting on your favorite piece of clothing. Just pick the right size for you from the available range (S - 4XL for regular T - shirts and S - 3XL for Premium T - shirts). When it comes to cleaning, remember to machine wash them cold and turn them inside out. Wash them with clothes of similar colors to prevent color bleeding. Only use non - chlorine bleach if necessary. After washing, hanging them to dry will give the best results, but you can also tumble dry on cool or low heat. Stay away from fabric softener because it can make the colors fade. And don't try to iron or dry clean these shirts, as it might damage the fabric.