Champion Women's Show Off Sports Bra 76% Nylon, 24% Spandex; Cup: 100% Polyester; Cup Linings: 100% Polyester; Frame Inner Lining: 100% Nylon; Back Linings: 70% Nylon, 30% Spandex; Sling Lining: 67% Nylon, 33% Spandex; Sling Side Back: 66% Nylon, 34% Spandex Imported Hook and Eye closure Machine Wash Moisture management technology helps keep you dry Patented concealing cups for lightweight shape and modesty Keyhole racer back with hook and eye closure for easy on and off Front adjustable straps for a custom fit