Alpinestars GP Plus Perforated Leather Jacket Features 1.3mm full grain leather construction 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 Tech Chest Guards available as accessory upgrade) Snap connection system to integrate CE level 2 certified Bionic Race Back Protector Internal waist connection zipper allows attachment to selected Alpinestars leather and textile pants