MotoGP developed racing technology for both track and high performance street use. -- 1.2-1.4mm premium full-grain, leather for excellent abrasion resistance.—Alpinestars exclusive, patented, high modulus thermoplastic external shoulder protection.—Unique, seamless, elbow and arm construction.—Exclusive forearm PU protection to improve strength and abrasion resistance.—Multiple stitched main seam construction for maximum tear resistance.—External one-piece 90° TPU knee and tibia protection for improved protection and soft grip area on inner surface to improve contact with the bike.—Patented 45° leather flex zones for improved fit and complete multi-directional flexibility.—MotoGP profile, ventilated back hump for improved aerodynamic and ventilation performance.—Ultra-vented frontal surface provides maximum cooling effect while riding.—Increased stretch Kevlar panels reduce resistance and improve comfort.—Removable, internal, 100% anti-bacterial lining with strategically placed soft protection is washable.—Chest pad compartments with PE protection padding (Alpinestars Bionic chest guards available as accessory upgrade).—Alpinestars Bionic Race back protector, CE level 2 certified, is supplied as standard and locates with a secure snap connection.—Soft neoprene, comfort cuff and collar construction.—Alpinestars GP knee sliders.—YKK semi auto-lock zippers.—Distinctive design and color combinations and synthetic leather Alpinestars logos.—Black and Blue color suits are treated to reduce heat transfer in hot, sunny conditions.