Concentrate FlexiRib Wide Strap Sports Bra in Slate Oh Polly Sports Bra Elegantyoushop Double Strap Sports Bra TrueFeat Black Sculpt Cross Over Strap Sports Bra PrettyLittleThing USA. The Anna Kaci sports bra is detailed with a scoop neckline. Features double racerback wide straps that crossover the open back. This lightweight, breathable, quick drying sports bra is perfect for your next gym session or yoga class. MATERIAL: 85% Nylon 15% Spandex MEASUREMENTS: Small : 4 6 Waist: 25" 26. 5"in Chest: 33" 34. 5"in Medium : 6 8 Waist: 26. 5" 28"in Chest: 34. 5" 36"in Large : 8 10 Waist: 28" 29. 5"in Chest: 36" 37. 5"in X Large : 10 12 Waist: 29. 5" 31"in Chest: 37. 5" 39"in