To use these women's fitness apparel, simply put them on and enjoy your workout. When it's time to clean, machine wash them cold and inside out with clothes of similar colors. Only use non - chlorine bleach if needed. For the best look, hang them to dry. If you're in a hurry, you can tumble dry on cool or low heat. Remember, fabric softener can make the colors fade, so skip it. And don't try to iron or dry clean these shirts as it might damage them.