Construction: Premium 1.2 – 1.4mm Brazilian Leather, advanced multi-stitched seam construction system for maximum safety and durability same system as used on AGVSPORT pro road race suits. Armor: C.E. approved dual density armor in shoulder and elbow and aerodynamic full race hump for better air flow at high speeds. Fit: Pre-curved anatomical sport cut fit, ergonomically placed front and rear racing inspired flex panels for increased comfort and mobility and aramid flex material in inner arms for greater comfort and motion. GSX-R Pro Leather Jackets also feature adjustable waist fasteners, 8 in. rear zipper for riding pants. Ventilation: Adjustable front intake and rear exhaust vents with genuine YKK zippers. Molded air intake vents on shoulders. Special Features: Aerodynamic full race hump, Anti-bacterial nonallergenic poly mesh liner, Reflective AGVSPORT badges. US Sizes 40-54 (where available), see fitting chart.