Stonewear Designs Size Chart Help yourself stay motivated and get through your next barre or cycle class with this flattering Diamond Racerback. Athletic fit tank skims the body with a slight contour. Stretchy design wicks away moisture to ensure superior comfort. Pullover styling. Scoop neck. Racerback detail. Embroidered brand marking at nape. Curved hem. 89% polyester, 11% spandex. Machine wash, line dry.