One of the closure mechanisms on this hiking backpack is a buckle and zipper. The material of choice for this bag is nylon and it is primarily intended to be used by men.
From Alpine Trek
Osprey - Farpoint Trek 75 - Travel backpack size 75 l, black
The product is available from £160.23 at international stores.
OnBuy
Osprey Farpoint Trek 75 Men's Backpacking Backpack Black O/S