Chantelle Women's Aeria Lightweight Convertible Bra Cup: 91% Polyester, 9% Spandex; Cup Back: 88% Polyamide, 12% Spandex; Lining: 100% Polyester Imported Hook and Eye closure Hand Wash Light-as-air spacer foam underwire cups create a round, seamless, natural shape Medium coverage cups contain and lift for all-day comfort and support Cups are made of breathable fabric which are also crush resistant making this bra the ideal travel companion Double-lined mesh band Fully adjustable straps with a convertible j-hook clip