This features one-half inch of high density, closed cell foam that helps protect the oxygen regulator. It is large enough for your cylinder and attached regulator. There is a pocket on the side for a mask, nasal cannula, etc., elastic loops inside pocket for seven oral airways, and a shoulder carrying strap that includes hook and loop straps to attach to a cot rail. Made of heavy Cordura® nylon, it has 3M™heat applied silver reflective trim to minimize contamination. There are models available for “C”, “D” and ”E” cylinders. It is available in orange or green and weighs16 oz.