YogaColors Women's Crystal Active Racerback Tank with Built In Shelf Bra 95% cotton/5% spandex Workout or lounge in this oh so versatile tank top with comfortable shelf bra. Features YogaColors signature Swarovski crystal on back of neck. 6.5 oz., 95% cotton, 5% spandex Bust: X-Small: 30-31", Small: 32-33", Medium: 34-35", Large: 36-38", X-Large: 39-41", XX-Large: 42-43" Length: X-Small: 24", Small: 25", Medium: 26", Large: 27", X-Large: 27", XX-Large: 29"