Check the listing for details. OxyGo Ultra Lightweight Backpack - Black (O2Totes). Condition: New. Listed at 59.99 USD. MADE FOR: THE OXYGO & INOGEN ONE G3 (#IO-300)*Please know these two units are the same, just different names!FEATURES: Lightweight Cordura Canvas with Patented Breathable MeshDurableProper Ventilation Great for Men & WomenZippered Spiked Rubber Bottom Charging Accessibility (your unit can remain in the backpack)Oxygen Tubing Holder (helps keep tubing from dragging)Adjustable Waist Straps with Removable Chest StrapsCarry HandleZippered Inside Pocket DIMENSIONS: LENGTH: 9.5” WIDTH: 3.5”HEIGHT: 9” (Fits Standard & Double Battery)WEIGHT: 14ozZIPPERED INSIDE POCKET: 5” x 5”CARRY HANDLE: 4”BACKPACK STRAPS: 18” Shortest - 42” LongestWAIST STRAPS: 8” Smallest - 47” LargestSHOULDER STRAP WIDTH: 2.75” (Triple Padded 3D Mesh Foam)CLEANING: You can easily spot clean with soap & water - air dry. If it requires a full wash, we recommend dry cleaning! We test all of our products with the unit for months, they go through rigorous testing to ensure you and your unit are safe! Here at o2totes we focus on product quality, affordability, & style. We know wearing oxygen can be cumbersome, that's why our backpacks are made for you!