Alpinestars GPR Leather Jacket Designed to let you feel as cool as you look, the Alpinestars GPR Perforated Leather Jacket features ventilated inserts in its supple, full-grain leather construction for enhanced airflow. 1.3mm full-grain leather provides the optimum combination of durability, comfort and abrasion resistance. Integrated Aramidic stretch panels in the shoulders allow full range of movement for extra comfort and control while riding. Removable and adjustable CE certified Bio Armor protectors in the elbows and shoulders. Chest and back pad compartments with PE protective padding (Alpinestars CE certified Bio Armor back protector insert and Bionic Chest Guards available as accessory upgrade). Snap connection system allows integration with Alpinestars CE level 2 certified Bionic Race Back Protector (optional accessory). Internal waist connection zipper allows attachment to selected Alpinestars leather and textile pants Perforated leather for ventialtion and use in warm weather