78% Nylon, 22% Spandex Imported Hand Wash Only ULTRA DURABLE: Lycra Xtra Life fabric lasts 5-10x longer than ordinary spandex A BETTER FIT: Speedo's specialty 9 Thread Flatlock Technology molds to your body's natural shape and keeps everything in place through vigorous exercises STAYS IN PLACE: Lotion and oil resistant material for stay-put coverage CHLORINE-RESISTANT: Resists fading, sagging, and bagging MATERIAL: 78% ECONYL / 22% Lycra Xtra Life fiber