This 40L large trekking backpack with resaonable storage space,provides more convenience during your outdoor activities. Suitable for traveling,trekking,hiking,mountaineering and other outdoor activities.Features: Rip resistant and water repellent polyester backpack,lightweight and long-lasting. 40L large capacity features on multiple pockets,keep your camping gears in well organization. Padded computer compartment can store your laptop up to 14inches. Top,side and bottom buckled straps make it easier to carry your items,like camping mat,trekking poles,etc. Ergonomic backing system for better back support. Adjustable mesh padded back,mesh padded shoulder straps,flexible chest strap and adjustable waist strap,provide comfort and flexibility. D loops,front hanging loops,multiple elastic drawstring straps,make the most of the space to accommodate more items. Emergency whistle provides convenience during outdoor activities. Suitable for traveling,trekking,hiking,mountaineering and other outdoor activities.Specification: Color: Black / Red / Blue / Green (optional) Material: Polyester Capacity: 40L Size: 28 * 13 * 50 cm / 11.0 * 5.1 * 19.7 in Weight: approx. 890 g / 2.0 lbPackage List: 1* Backpack