Speedo Big Girls'  Tropical Swirl Butterfly Back Tankini Swimsuit 80% Nylon/20% Xtra Life Lycra Imported Xtra life lycra fabric lasts 5 to 10 times longer to give you more value for your money Resists bagging, sagging, and the effects of suntan lotion, skin oils, and chlorine No wedgie worries technology with silicone gripper at leg openings for stay put coverage Sporty thin strap butterfly back styling for an improved fit and secure comfort Made by speedo, the world's no.1 swim brand