Made Of Combo: rPET And Neoprene. 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 And Strap Are Not rPET. Front Zippered Pocket. Front Slip Pocket. Hook And Loop Closure. Adjustable/Removable 57" Padded Shoulder Strap. Fits Standard 40 Oz. Bottles And Tumblers. Spot Clean/Air Dry.