The jammer swimsuit is made with 100% polyester and is 20 times longer lasting than traditional swimwear. 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. TYR Training swimsuits are fully lined, ensure 4-way stretch technology and provide UPF 50+ sun protection. All Durafast One suits are chlorine proof and sustain an impressive 300+ hours of performance.