Using these Derry Fitness tank tops is easy. Just put them on and enjoy your workout or daily activities. For men and unisex ones, you can choose from sizes XS to 2XL. Women have a wider size range from XS to 4XL. When it comes to washing, remember to use cold water and turn the tops inside out. Wash them with clothes of similar colors. Only use non - chlorine bleach if there are stains. After washing, hanging them to dry is the best option, but you can also tumble dry on a cool or low - heat setting. Stay away from fabric softeners as they can make the colors fade. And don't try to iron or dry clean these tank tops, as it may damage the fabric.