Backpacks and attack 25 liters. Way back with air system with mesh padding anti-sweat and perspiration channels. Set in the chest and waist for extra support backpack. Zippered fanny. 600D ripstop polyester ripstop fabric. Two-ax or carrying canes. Compression straps. Output main compartment and inner pocket for camel bag. Various departments pocket and front pocket. Side racks. Cubremochila for incorporated into the bottom of the backpack rain. Dimensions: 30x35x50 Weight: 967 grams.