Recycled-polyester fabric is treated with a polyurethane coating and durable water repellent finish Roomy main compartment holds larger items such as your jacket Zip pocket under the top lid secures a wallet, snacks, etc. Padded laptop sleeve holds a 15 in. laptop and is raised up off the pack bottom for protection Same padded sleeve doubles as an insulated hydration reservoir (reservoir not included) Ergonomic shoulder straps