The 26-litre Arbor backpack is a sleek and efficient redesign of a classic mid-eighties Patagonia pack, with a modernized build for today's urban and outdoor environments. It’s built with a durable 600-denier recycled polyester body, coated with polyurethane and a moisture-shedding DWR finish. Its main compartment secures with a large top-flap, which has a zip pocket underneath for essentials like a wallet. The interior houses a raised, padded 15" sleeve with a buckle closure, which can double as an insulated hydration reservoir when out on the trail. Patagonia furnished the Arbor with Human Curve® shoulder straps that conform ergonomically to the upper body and chest. The exterior also has accessory patches along with a fixed webbing loop for carrying outdoor gear or a yoga mat.