SFA Deluxe Challenger Bass bag protects your instrument and bow from rapid changes in heat and cold. Their lightweight construction and ergonomically placed handles make them comfortable to carry, perfect for musicians on the go. It's crafted using fiberglass-reinforced foam padding fused to black, water-resistant backpack cloth. The sturdy zippers have heavy-duty sliders and are cloth-backed so the zipper never touches the instrument. Includes a full-length zippered music pocket, zippered bow pocket with padded bow sheath, non - slip shoulder strap.