Constructed with supple, premium, 1.3mm full-grain leather for unsurpassed abrasion resistance, comfort and durability. Removable CE-certified shoulder and elbow protection for class-leading impact protection. Chest compartments with PE padding (Alpinestars Bionic chest pads available as accessory upgrade). Back compartments supplied with replaceable poly-foam padding (CE-certified Bio-Armor back protector insert available as accessory). Extensive advanced Aramidic stretch panels on underarms, elbows, torso and shoulders give superb range of movement. Anatomically innovative sleeve design to reduce fatigue and improve riding comfort. Low profile, round-edged collar for comfort features snap fastener. Cuff adjustment features zips for improved range of fit and comfort. Removable, multi-panel thermal lining incorporates stretch inserts for improved fit. Internal waist connection zipper to allow attachment to Alpinestars riding pants. Technical, pre-curved sleeve construction for optimized sport riding fit. Four external zippered pockets and three internal pockets. Premium YKK fasteners used throughout garment, including Semi Auto Lock wrist zippers.