1.4-1.5mm thick drum dyed top-grain cowhide leather for excellent abrasion resistance Pre-curved sleeves for proper riding position Dual stitched main seams for excellent tear resistance Perforated leather on the sleeves, on the sides of the jacket, and behind knees to keep the rider cool Zippers throughout Full circumferential zipper at waist allows the jacket to be removed from pants and makes the suit legal on all racing tracks Removable dual density armor at knees, shoulders, and elbows. Leather stretch panels at lower back and above the knees for maximum flexibility Mesh lining Patches for attaching knee pucks are sewn on One inside chest pocket Lightly padded race style collar The suits are race-legal and can be used on all racing tracks as well as for street riding.