Outer: 80% Polyamide, 20% Spandex; Inner: 100% Polyester Imported Hook and Eye closure HIGH SUPPORT: Supportive padded sports bra with wire for high impact activities. BOUNCE CONTROL: Minimize bounce thanks to foam-lined underwire cups. NO UNIBOOB: Full coverage rncapsulated cups adds support and avoids uni-boob. STAY PUT: Stay-in-place racerback with back adjustable straps and hook-and-eye closure. MAXIMUM COMFORT: Moisture-wicking, breathable fabric and mesh to keep you cool. This sports bra with racer back provides good performance. It supports you well and keeps you cool during your workouts. br Padded straps relieve pressure on shoulders. Back closure to offer better fit.