PowerFLEX fabric - designed for movement: •Durable fabric goes strong after 200 continuous hours exposure in the pool. •Engineered to last 5-10 times longer than spandex. •Resists sagging, bagging and the effects of chlorine, skin oils and suntan lotion. •Reinforced seams. •Non-slip drawstring at waist. •Front gusset. •80% Nylon/20% LYCRA® XTRA LIFE™ fiber.