90% Polyester, 10% Spandex Pull On closure Race Fit - Athletic torso; Looser cut than Precision Fit Tapered sleeve and traditional length Blue Sign Certified TLD Air Mesh; Lightweight ventilated polyester TLD Air Mesh front and back 4-way stretch fabric allows for unrestricted mobility; Neckline Welded Construction Troy Lee Designs: 40 years of racing for the World's Fastest Racers. Corona, California 355330002 SM 355330003 MD 355330004 LG 355330005 XL 355330006 2XL