PATAGONIA Arbor Classic Pack 25L Black. Body: 6.2-oz 600-denier 100% recycled and solution-dyed polyester. Lining: 3.3-oz 200-denier 100% recycled polyester. Both treated with a polyurethane coating and a DWR (durable water repellent) finish. Generous main compartment; zippered stash pocket beneath flap; raised, padded laptop sleeve protects most 15" laptops. Human Curve shoulder straps for carrying comfort. Top-mounted, reinforced haul handle. 590gr - 20 x 11 x 6cm - 25L.