First Manufacturing Biker Women's Jacket The Biker Leather Jacket is constructed from sheep diamond leather with perforations on the back. With the removable thermal liner, this jacket can be worn comfortable on cold or warmer days. Features 0.8-0.9mm Sheep Diamond Scooter style w/ double snap banded collar, epaulets, and center zipper Two shoulder vents Two zippered slash pockets Two interior pockets Zippered sleeves with gussets Perforated action back Side relief zippers Action back Vertical back vents Insulated zip-out thermal liner Elbow, shoulder, and back armored pockets for CE rated armor (sold separately) First Manufacturing Co offers a lifetime warranty against defects in material and workmanship of leather products from the original date of purchase for the life of the item.