TYR Navy Lapped Diamondfit One Piece Swimsuit Size 36TYR 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. Featuring a medium neckline, sleek flexible straps, open, triple bound X back and high cut leg, the Trinityfit is ideal for athletes who want comfortable coverage during every swim.