Speedo LZR Racer Elite 2 Comfort Strap Kneeskin Polyamide Hydro Form Compression System: Patented Speedo Core Stabalizer & Internal Compression Panels, assist in achieving drag reducing streamlined form and improved economy. 3D, 3-Piece Pattern creates the ultimate fit with complete freedom of movement LZR Pulse+: LZR Pulse+ fabric featured in the LZR Racer Elite 2, offers a 40% increase in durability of water repellency as well as delivering powerful body compression, optimizing hydrodynamic form in the water for maximum speed and performance Recordbreaker: Our top competitve back, featured in Fastskin FSII and Aquablade suits. A lower back and higher cut offers ultimate freedom of motion. Fina Approved: This item is approved and meets all FINA regulations for competition Aqualab: Researchers from Aqualab work with experts from diverse industries and the world's top athletes and coaches to pioneer technological advancement in the sport of swimming.