Speedo Women's Active Keyhole Swimsuit Top 80% Nylon, 20% Lycra Extra life lycra fabric lasts 5 to 10 times longer to give you more value for your money Exclusive silicone gripper fit system under bust to provide the most secure fit for all of your active needs Adjustable straps for quick custom fit Removable cup construction Made by speedo, the world's number 1 swim brand