Features of the Mammut Seon 3-Way Backpack Additional detachable shoulder strap Stowable shoulder straps Can be used as backpack, shoulder bag or tote bag Attachable to trolley handle Comfortable anatomically shaped, soft padded shoulder straps Weatherproof external zipper compartment Padded fleece laptop sleeve (up to 17.3 inches) Huge back zipper opening to the in. WORKin. compartment turns the backpack into a mobile workstation Water-repellent padded secondary in.WORKin. compartment, accessible from the outside-ideal for carrying a laptop, tablet and documents Water-repellent valuables compartment with internal partition, accessible from the outside Huge front zipper access to main compartment Spacious in.CLIMBin. main compartment to hold Climbing equipment for your next visit to the Climbing gym 2 Comfortable, sturdy handles