Durability knows no limits with the Mens Durafast One Jammer Swimsuit. The jammer swimsuit is made with 100% polyester and is 20 times longer lasting than traditional swimwear; you can be sure the fit wont sag and the color wont fade in the sun or chlorine. Boasting four way stretch technology and UPF 50+, this Durafast swimsuit provides excellent freedom of movement and sun protection. Featuring an above-the-knee cut, championship cut, and adjustable drawcord waist, TYR jammer swimsuits give you the perfect balance of support and freedom of motion. Fully lined.