Body: 51%Polyamide,39%Polyester,10%Spandex; Lining: 90%Polyester,10%Spandex Imported Seamless built-in underwire offer support without showing through. Adjustable wide straps for better comfort and fit. No-stretch full cups reduce busts by 1-2 inches. Non-padded design help you says no to swelter. Made of soft and smooth fabric.