86% Nylon,14% Spandex Imported Hook and Eye closure Seamless and No Show Bra Designed Front Close: Front hooks & eyes closure easily put on and off, more convenient for wearing after a post surgery. Wide Shoulder Straps: Non-adjustable shoulder straps are widened to reduce some pressure on shoulders and no clips dig in the skin. Wirefree Cups: Wirefree thin cups design with no underwire poking but gives enough support to lift the bust and outline a natural bust shape. Premium Fabric: Elastic side band touches soft and smooth, making the bra all day comfort for everyday wearing.