Lycra/Nylon/Xtra/Life/Spandex Imported 80% Nylon, 20% Lycra Xtra Life / Lycra Xtra Life performance: Comfort you expect in quality swimwear made with Lycra, improved long-lasting fit and lasts 5-10 times longer than ordinary Spandex UPF 50+ sun protection fabric Fully lined front and back Extra thin straps, high cut leg, and scoop neckline Flat-locked seams lay closer to the body and won't chafe against skin