Reebok Women's Sugarcoat Tank Suit 80% Nylon, 20% Lycra Spandex Xtra Life Lycra - Resists Chlorine And Other Pool Chemicals Allowing Garments To Keep Their Shape 2X Longer Than Conventional Chlorine Resistant Spandex Silver lining - each swimsuit embodies unique properties that help create a bacteriostatic environment, making it very difficult for bacteria and other microorganisms to grow