The inside configuration features two inch nylon straps to secure a "D" or jumbo "D" size oxygen tank. A large utility pouch featuresa clear vinyl window to view contents. Includes quick-draw bag-valve-mask mesh pouch. Both pouches are removable.The inside of the front panel features various pockets, elastic loops, and a protective zippered vinyl cover to keep supplies organized and clean. Material: 600D polyester. Size: 20.5" x 16" x 5". All packed 2/case.