Alpinestars GP Plus Leather Jacket The 2011 Alpinestars GP Plus Jacket is designed for the city rider who also enjoys spirited weekend riding. Constructed from full-grain leather and featuring CE certified Bio Armor protection Cut from supple yet durable 1.3mm full-grain leather. Removable and adjustable CE certified Bio Armor protectors in the elbows and shoulders. Chest and back pad compartments with PE comfort padding (Alpinestars CE Bio Armor back protector insert and Bionic Chest Pads available as accessory upgrade). Snap connection system allows integration with the CE level 2 certified Bionic Race Back Protector. Inner mesh lining with stretch panel inserts that work with outer stretch zones for improved flexibility and precise fit. D-ring waist adjustment allows a tailored fit. Convenient internal Napoleon pocket with zippered closure. Internal waist connection zipper allows attachment to selected Alpinestars leather and textile pants Available in fully perforated model for warm weather riding.