Patagonia Arbor Backpack 26L Recycled-polyester fabric body with a DWR (durable water repellent) finish offers a perfect balance of weight and durability for everyday use Generous main compartment; zippered stash pocket beneath flap; raised, padded laptop sleeve protects most 15" laptops Body: 8.4-oz 600-denier 100% recycled polyester. Lining: 3.3-oz 200-denier 100% polyester. Both treated with a polyurethane coating and a DWR (durable water repellent) finish 618 g (1 lb 5.8 oz)