Beepeak Women's Built in Shelf Bra Racerback Tank Activewear Yoga Gym Tops Material:88% polyester+12% Nylon Super-smooth fabric delivers the ultimate chafe-free comfort . the special compression buit-in bra ensure it provides the support you need .it is made from breathable fabric to keep you cool, dry and self-confident during your sports activities. Moisture Management technology wicks moisture away from your skin to keep you cool and dry,very good for yoga tops, fashionable workout/gym/fitness women clothes,Ideal for everyday active lifestyle as well. Chafe-resistant flat lock seams. Sizes:M(US4-6)L(US8-10)XL(US10-12)