Full of features the Gamma backpack is the best all-around travel bag. 600D Polyester made of REPREVE Our Ocean recycled ocean plastics. 1680D REPREVE bottom panel. 200D Polyester interior made from recycled PET. Large main compartment with internal organization. Laptop storage compartment with zipper opening fits up to 15" laptops. External skate straps. Water bottle pocket. Zippered stash pocket. Multi-use gear loop. Small removable mesh pocket. 22-Liter capacity.