Universal - This easily adjustable oxygen tank holder allows you to safely and securely transport your oxygen tank on a wheelchair, rollator or other mobility aid. This oxygen tank bag makes it easier to travel with large oxygen tanks in your cart.Premium Material - This oxygen tank holder is made of sturdy nylon fabric with reinforced opening and bottom, and lined with composite material for extra durability. It is lightweight, waterproof, easy to use, and can be folded into a small package for storage.External Compartment - This sturdy oxygen tank holder features a sophisticated storage pocket on the front to safely store loose items. Pockets can hold non-rebreather masks, books, tissues, oxygen tanks, and more.Safety - This oxygen tank holder comes with 4 straps, making it easy to install on most wheelchairs, rollators, and walkers for added convenience. The straps have quick-release buckles to secure larger oxygen tanks for comfortable use. Adjustable straps allow the oxygen tank to be placed off-center to avoid crushing the patient's head or back.Instructions - 28 inches long and 10 inches wide. Suitable for O2 cylinders and smaller. To use, place the cylinder in the sleeve. With the cylinder facing away from the backrest, hook the top strap on the push rod and secure the bottom strap to the wheelchair frame. Tighten the strap to the desired size, then loosen the strap on one side to eccentrically position the cylinder.