The ribbed look is in! Our black ribbed PU biker jacket is made from synthetic leather, so it is waterproof, stain-proof, and windproof! Polyester lining. Waist belt. Trending offset zipper design, with faux zipper to create a trapezoid look to your chest. Stand out from the crowd when wearing this slim fit totally cool jacket! Please refer to the size chart for correct fit. Largest size fits a 46" chest. If planning to wear a heavy sweater, order larger please. PU leather, or polyurethane leather, is an artificial leather made of thermoplastic polymer, and is considered vegan.