Harkening back to Patagonia´s heritage in packs, the Arbor Classic Pack carries most everything you need in one large, main compartment. It closes with a drawcord and seals with a large flap pocket to hold your inventory of everyday goods - from books, lunch and a shell, to climbing shoes and chalkbag. A zippered pocket beneath the lid stashes a wallet and phone out of view. Inside, a raised, padded sleeve with a buckle closure protects most 15" laptops from hard knocks and also doubles as an insulated hydration reservoir when you hit the trails. A small, zippered front pocket holds your keys, sunglasses and boarding pass. Human Curve straps conform ergonomically to your shoulders and upper chest for all-day comfort under loads. Patagonia is now making the Arbor Classic from all-recycled fabrics - a durable 600-denier 100% recycled and solution-dyed polyester shell with a lining of 200-denier 100% recycled polyester. Both fabrics have a polyurethane coating and a DWR (durable water repellent) finish.