1.2-1.4mm full-grain leather construction. Removable CE approved GP elbow and shoulder protectors. Ergonomically placed accordion stretch panels and stretch panel insert for optimal fit. Aerodynamic hump. Pre curved sleeves for optimal comfort. Waist connection zipper allows attachment to selected Alpinestars leather pants. YKK Semi Auto Lock zippers. Adjustable waist. Chest padding pocket with foam chest pad. Removable thermal vest. Die Cut logos TPR logos and details. External foam padding. Soft collar with padded mesh insert. Soft wrist cuff construction. Multiple stitched main seam construction for maximum tear resistance. Back protector compartment with a foam back pad (CE certified RC back protector available as accessory).