JINSHIWEIQI 80L Waterproof Outdoor Travel Hiking Trekking Camping Tactical Backpack Climbing Bag Large capacity: 75L+5L. Original capacity 75L. Extended capacity 5L. Comfortable: Adjustable S-shape shoulder belt fit users body perfectly Various compartments: With pockets of different sizes, providing different storage options Internal support:Aluminum alloy internal frame is steady and will not go deformation easily. It will keep balance for the bag and make it in shape. Widely utility: This multi-purpose bag is for different usage. Such as hunting and hiking backpack, travel luggage bag