86% Polyamide,14% Spandex<br/>Contour/t-shirt underwire cup has heavy graduated, crescent-shaped soft push-up padding for lift.Silicone gripper elastic at top and bottom of sides and back for no-slip hold.Sweetheart-neckline makes it easy to wear low-cut tops and dresses.Convertible, wide-set, clear straps adjust in the back with plastic hardware.Wide Stay-Put elastic band sewn onto interior of middle in the back for a secure fit.