Paladineer Men Outdoor Sports Large Capacity Hiking Backpack Laptop Backpack-Ideal for Hiking, Camping, Climbing, Traveling, Running, Cycling, Exercising or Other Outdoor Activities 40L High quality material, comfortable, durable and wear-resistant. Large capacity with many zipper pockets, mesh pockets and multilayer design. Capable of relieving pressure on shoulders with the widened and thickened adjustable breathable shoulder straps. Antirust breathable mesh, portable belts and chest strap equipped on the bag. Comfort with breathable back cushion.