Speedo 7190601 Women's LZR Racr X Clsd BCK Kneeskn 1pc. Swmsuit 65% Nylon/35% LYCRA Spandex. FINA Approved. Dual fabric construction, which offers higher levels of compression, combined with increased freedom of movement. LZR Racer Pulselite light, powerful & durable fabric. LZR Racer Comprex one way stretch for higher compression. Laser cut straps provides the optimum balance between stretch and comfort.,Ab activators helps to promote optimal body position in water.,Maximized support seam construction improves the linkage of the muscular kinetic chain.,Fully bonded seams