[Universal]: Easily adjustable, the oxygen tank holder allows you to safely and securely port an oxygen tank on a wheelchair, rollator, or other mobility aid. This oxygen tank bag makes travelling with the large tank much easier in the cart. [Securely]: Designed with 4 fastener straps, oxygen cylinder carrier is easy to install on most wheelchairs, rollators, and walkers for greater convenience. The straps include quick-release buckles and are positioned to stabilize larger cylinders for comfortable use. Adjustable straps position the tank off-center to avoid the patient's head or back. [Special Material]: Constructed with a rugged Polyester material, the Oxygen cylinder holder features a reinforced opening and base and is also lined with a composite material for added durability. It's , waterproof, easy to use, and can be folded into a small package to store. [Exterior Compartment]: Sturdy oxygen tank holder with a nice storage pocket on the front for securely carrying extra loose items. The pocket allows you to place non-rebreather masks, books, tissues, bottles, etc. [Application Instruction]: Length 27.3 inchand width 9.4inch. Fits sizes D and E, O2 oxygen tanks, and smaller tanks. When in use, put the oxygen cylinder into the sleeve. With the cylinder facing away from the backrest, hang the top strap over the push handle and secure the bottom strap to the wheelchair frame. Pull the strap taut to the desired size, then loosen the strap on one side so the tank is off-center. Color: Black Material: Polyester Package Contents: 1 x Oxygen Tank Holder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.