Bikini top underwired cups stretch-nylon adjustable straps fully lined hook fastening at back hand wash imported sunscreen and chlorine can discolor swimwear. please follow care instructions Form and Fold creates swimwear that’s inclusive and functional, its designs are tried and tested up to 20 times to ensure quality and fit. 'The Line' underwired bikini top is made from sculpting stretch fabric with a satin-like sheen and has strategic seaming.