Sizing Guide Get the Right Fit
• Alpinestars race-derived, external Dynamic Friction Shield (DFS) protectors in the elbows and shoulders feature injection-molded shells and dual density foam padding.
• Removable, internal CE-certified protectors offer superior impact protection to shoulders and elbows.
• Snap connection system allows integration of CE level 2-certified Bionic Race Back Protector for the ultimate in protection.
• Back pad compartment with PE padding (Alpinestars Bionic Back protector available as accessory upgrade).
• Nucleon KR-1i and KR-2i. Size 46-50 use MEDIUM insert. Sizes 52-64 use LARGE.
• Chest pad compartments with PE padding (Alpinestars Bionic chest pads available as accessory upgrade).
• Nucleon KR-Ci. Size 46-50 use XS/S, Size 52+ use M/XL.
• Highly abrasion resistant main construction from premium, 1.3mm full-grain leather for excellent comfort, fit and durability.
• Advanced microfiber accordion stretch inserts in key articulation areas on back and elbows for excellent performance fit.
• Extensive advanced microfiber stretch panels on chest, underarms and waist for range of movement.
• Integrated PE comfort padding on the chest, torso, coccyx and back further enhances fit and comfort while riding.
• High-density perforations on chest and arms offer airflow and help regulate body temperature.
• 3D mesh sleeve comfort cuff edging for breathability; cuffs incorporate zip closures for secure and customizable fit.
• Soft, 3D mesh and leather collar construction for breathability and comfort.
• Moto GP profile, perforated, back hump for improved aerodynamic and ventilation performance.
• Multi-panel lining incorporates 3D mesh inserts to improve comfort, fit and ventilation; liner is removable and can be easily washed.
• Reflective detailing for improved rider visibility.
• Premium YKK fasteners and semi-auto locking zips used throughout garment.
• Full circumference waist connection zipper allows attachment to Alpinestars riding pants.
• D-ring waist adjustments feature Velcro® straps for secure and personalized fitting.
• Extended lower back profile for improved lumbar coverage.
SELECTION AND FITTING
• NOTE: All products shown on this page are sized according to the EURO SIZE listed in the MEN’S APPAREL SIZE CHART