--- product_id: 265347913 title: "Backpack For Inogen G4, Ultra Lightweight backpack|/Backpack Only, Does not come with O2/Only fit for the Inogen One G4" brand: "o2totes" price: "£81.50" currency: GBP in_stock: true reviews_count: 5 category: "O2 Totes" url: https://www.desertcart.co.uk/products/265347913-backpack-for-inogen-g4-ultra-lightweight-backpack-backpack-only-does store_origin: GB region: United Kingdom --- # Custom fit for Inogen One G4 Zippered bottom for easy battery swap Ultra lightweight at 10 oz Backpack For Inogen G4, Ultra Lightweight backpack|/Backpack Only, Does not come with O2/Only fit for the Inogen One G4 **Brand:** o2totes **Price:** £81.50 **Availability:** ✅ In Stock ## Summary > 🎒 Carry Light, Live Large: The Ultimate Backpack for Your Inogen One G4 ## Quick Answers - **What is this?** Backpack For Inogen G4, Ultra Lightweight backpack|/Backpack Only, Does not come with O2/Only fit for the Inogen One G4 by o2totes - **How much does it cost?** £81.50 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/265347913-backpack-for-inogen-g4-ultra-lightweight-backpack-backpack-only-does) ## Best For - o2totes enthusiasts ## Why This Product - Trusted o2totes brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Charge While You Go:** Built-in grommet port lets you charge your device without unpacking—stay powered up anywhere. - • **Effortless Power Swap:** Zippered bottom access lets you change batteries on the fly—no unit removal needed. - • **Featherweight Freedom:** At under 10 ounces, carry your Inogen One G4 without the bulk slowing you down. - • **Comfort Meets Function:** Double padded, adjustable straps with waist and chest support for all-day wearability. - • **Tailored Precision Fit:** Designed exclusively for Inogen One G4 and compatible units, ensuring a snug, secure fit. ## Overview The O2TOTES Ultra Lightweight Backpack is a sleek, US-designed daypack tailored exclusively for the Inogen One G4 and similar oxygen units. Weighing just 10 ounces, it features double padded adjustable straps, a zippered bottom for quick battery swaps, and a reinforced grommet for charging on the move. Crafted from durable canvas and mesh, it offers secure protection with a clear panel for easy screen viewing, making it the go-to choice for professionals who demand comfort, convenience, and style in their mobility gear. ## Description The Ultra lightweight backpack for the Inogen one G4 & Oxygen Fit is the perfect backpack for anyone looking for a lightweight backpack that will not weigh you down. This lightweight backpack comes in an easy to clean, canvas material with mesh panels surrounding your unit. Your backpack can easily charge in the backpack with the grommet output. Backpack straps are padded, lightweight and adjustable. Comes with an adjustable and removable chest strap. The G4 ultra lightweight backpack only weighs 8 ounces making it the smallest, lightest backpack on the market. Review: I have an Inogen G4 and this bag is the perfect backpack for it. Zips along the bottom which allows me to change batteries without removing the entire unit. The top also opens, allowing direct access to the top of the unit. The aluminum nozzle is not obstructed by the case. Additional holes in the back of the bag are metal grommet reinforced so the bag will last a long time and it can be washed without fraying. Review: I was looking for an alternative to the Inogen provided cross-body bag which only has one shoulder strap. I thought this would be more comfortable but it is not. It's very awkward for me to get it on properly .. I am a small woman and trying to cinch the straps tightly enough without making the arm holes too small was just a real pain. I can't imagine trying to quickly put this on when getting off a plane! Also, 2 complaints. The nasal tubing must be passed through the grommet in the top flap...That is a nuisance! The top flap should be configured to go around the tubing so you can change it quickly if needed. Also, there are no hooks to hang anything such as the cannula holder which I bought to keep the cannula off the floor. There should be some loops or hooks provided . I am staying with the Inogen bag. It is much more sturdily constructed and much more comfortable for me. ## Features - ULTRA LIGHTWEIGHT: ULTRA Lightweight at under 10 ounces this backpack is the perfect backpack for on the go with your Inogen One G4, Inogen Rove 4, OxyGo Fit. Please check that you have the correct unit for this backpack, there are more than one Inogen units and OxyGo. - CUSTOM FIT & DESIGNED IN THE US: Want a backpack that actually fits your unit and is manufactured only for your unit? This is it. Lightweight & functional with no fuss. Dimensions: 8.2” (H) x 5.91 (w) x 2.68 (D) will accommodate both the standard & extended battery (backpack only, does not come with a unit or batteries) - DOUBLE PADDED STRAPS: Backpack straps are double padded, long enough and wide enough for comfort & functionality. Comes with a waist and chest strap. Backpack straps are 17" at the shortest and 40" at the longest. This is a small petite backpack that is great for these small units. - ZIPPERED BOTTOM & GROMMET FOR CHARGING PORT: Zippered bottom makes changing your battery easy. Just unzip and change. This backpack accommodates both single and double batteries. While there are no pockets (to keep this backpack nice and small) Grommet on the back so you don't have to take out your unit to charge! Unit does not come with the backpack or the batteries. This is for the backpack only - PROTECTION: The main compartment for your G4 is protected by mesh and premium polyester. Your unit is secure on its own with a viewable protective clear panel for viewing your screen as well as a designated cannula port. - MOST IMPORTANT: DESIGNED IN USA and recommened by Inogen. Why is this important? The backpacks you sometimes see are manufactured without the standards that Inogen recommends for their backpacks. o2totes does. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B084D27HS7 | | ASIN | B084D27HS7 | | Age Range Description | Adult | | Apparel Closure Type | Zipper | | Backpack Design | Daypack Backpack | | Brand Name | O2TOTES | | Color | Black | | Compatible Device Size Maximum | 8.2 Inches | | Customer Reviews | 4.1 4.1 out of 5 stars (274) | | Customer reviews | 4.1 4.1 out of 5 stars (274) | | Date First Available | 23 February 2020 | | Department | unisex-adult | | Embellishment Feature | Cord | | Fit Type | slim | | Item Dimensions D x W x H | 6.8D x 15W x 20H centimeters | | Item Shape | Rectangular | | Item Weight | 10 Ounces | | Item model number | #IO-400 | | Lining Description | Polyester | | Manufacturer | o2totes for Inogen one G4 | | Manufacturer | o2totes for Inogen one G4 | | Material Type | Polyester | | Number Of Pockets | 2 | | Number of Items | 1 | | Outer Material | canvas and mesh | | Pattern | Solid | | Pocket Description | Stash Pocket | | Product Care Instructions | Hand Wash Only | | Product Dimensions | 6.81 x 15.01 x 19.99 cm; 283.5 g | | Product Style | Classic | | School Type | High School | | Shell Type | Soft Shell | | Storage Volume | 20 Liters | | Strap Type | Shoulder Strap | | Style Number | #IO-400 | | Subject Character | Sports | | UPC | 756676100512 | | Unit Count | 1.00 Count | | Water Resistance Level | Water Resistant | ## Images ![Backpack For Inogen G4, Ultra Lightweight backpack|/Backpack Only, Does not come with O2/Only fit for the Inogen One G4 - Image 1](https://m.media-amazon.com/images/I/81Ca4Ngp0vL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by J***R on 15 March 2025* I have an Inogen G4 and this bag is the perfect backpack for it. Zips along the bottom which allows me to change batteries without removing the entire unit. The top also opens, allowing direct access to the top of the unit. The aluminum nozzle is not obstructed by the case. Additional holes in the back of the bag are metal grommet reinforced so the bag will last a long time and it can be washed without fraying. ### ⭐⭐⭐ Review *by T***A on 15 December 2025* I was looking for an alternative to the Inogen provided cross-body bag which only has one shoulder strap. I thought this would be more comfortable but it is not. It's very awkward for me to get it on properly .. I am a small woman and trying to cinch the straps tightly enough without making the arm holes too small was just a real pain. I can't imagine trying to quickly put this on when getting off a plane! Also, 2 complaints. The nasal tubing must be passed through the grommet in the top flap...That is a nuisance! The top flap should be configured to go around the tubing so you can change it quickly if needed. Also, there are no hooks to hang anything such as the cannula holder which I bought to keep the cannula off the floor. There should be some loops or hooks provided . I am staying with the Inogen bag. It is much more sturdily constructed and much more comfortable for me. ### ⭐⭐⭐⭐⭐ Review *by R***L on 5 January 2026* Backpack would have worked fine no problem with backpack just wrong color ## Frequently Bought Together - o2totes USA Backpack Custom Fit For Inogen One G4, Inogen Rove 4, OxyGo Fit; Ultra Lightweight backpack fits both standard and double battery, Mesh panels for optimal ventilation, zippered bottom - Inogen Extended (8-Cell) Battery - Replacement Battery - for The One G4 Rove 4-1.1 lb. - 5.91 x 2.68 x 1.34 in. - Inogen One G4 Replacement Column Pair - Oxygen Accessories - Two Removable Metal Columns - 0.63 lb., 2.21 in. W x 2.37 in. L x 5.50 in. H --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/265347913-backpack-for-inogen-g4-ultra-lightweight-backpack-backpack-only-does](https://www.desertcart.co.uk/products/265347913-backpack-for-inogen-g4-ultra-lightweight-backpack-backpack-only-does) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-15*