Durable MaterialThe brown leather backpack is handcrafted of 2mm thick full grain cowhide leather, which is loved for its strength and natural texture. This bag will aging and develop a nice "used leather" look over time and use, each bag is unique. The ykk metal zippers are heavy duty and durable. The shoulder strap is comfortable and carries well, and the buckle has been upgraded to thick metal Large CapacitySize: 12.4(L) x 6(W) x 17(H) inches, weight: 3.75lb(a bit heavy which shows its durability and guaranteed to last more than twenty years), adjustable strap length: 28"-36.6". The large backpack tapers a little wider at the bottom by design, has enough space for laptop, books, water bottle, tons of accessories, wires, cords, mouse and other essentials for being on the go. It is a reliable companion for men on business trips, outdoor camping, overnight, daily work commutes Easy Access & ConvenienceThe real leather backpack is equipped with three handy fr