Chantelle Women's Sport High Impact Convertible Bra Knit External: 82% Polyamide, 18% Spandex; Knit Low Cup: 80% Polyamide, 20% Spandex; Knit Lining Inside: 100% Polyester; Knit Lining Back: 85% Polyamide, 15% Spandex; Knit Lining High: 100% Cotton Imported Hook and Eye closure Hand Wash Double-lined mesh band ensure firm support during high-impact activities; Reduces bounce up to 68 percent Full coverage cups Foam underwire cups lie smooth under clothing and provide no show through Foam padded wires provide comfortable lift Wide, padded fully adjustable straps with a moveable j-hook clip to easily convert to a racer back