The only backpack for the Inogen One G5 recommended by Inogen. Shipped directly from USA. If you are buying a backpack for your Inogen that is say, on TEMU. You will find yourself buying one of this quality in a few weeks. Better off buying a better brand first that you know is in the U. S. And will vent your unit correctly. The lightest, easy to carry backpack fit for your Inogen One G5 is available by o2 totes, the original manufacturers of the Ultra Lightweight Backpack for Inogen One G5 – a perfect ergonomic solution for your portable oxygen needs. This slim and lightweight backpack, weighing under 1 lb, is designed for comfort and convenience, making it easy to carry your Inogen One G5 wherever you go. It features breathable mesh panels for optimal airflow, ensuring your unit stays cool, and fits both single and double batteries for extended use. This is for the backpack only, this does not include a unit! Key highlights include triple-padded, adjustable straps, a removable chest strap, and a waist belt to suit all body sizes. With a zippered bottom for quick battery changes, a back charging port for easy access, and three pockets to securely store your Inogen accessories, this backpack offers maximum portability without sacrificing functionality. Perfect for those seeking a lightweight, durable backpack for their Inogen One G5 portable oxygen concentrator.