Made of Combo: 100% rPET 230D Twill/rPET 190T Lining, Polyester Knitted Fabric Backing. Made From Post Consumer Recycled Materials. Recycled Polyester (rPET) Is Obtained By Melting Down Existing Plastic Bottles And Other Material Sources To Create New Polyester Fiber. Zipper, Handle, Inner Binding, Buckle and Padding Are Not rPET. Zippered Main Compartment. Adjustable Shoulder Straps And Web Carrying Handle. Front Zippered Pocket. Two Side Slip Pockets. Trolley Strap. Accommodates Most Laptops Up To 13". Zinc Alloy Zippers. Polyester Webbing Zipper Pulls. Spot Clean/Air Dry.