The closure mechanism on this hiking backpack is a zipper. The material of choice for this bag is nylon and it is targeted towards men.
From The North Face
The North Face Basin Backpack 18l Tnf Black-tnf Black One Size
The product is available from £51.90 at international stores.
Physio Room
The North Face Basin 18 Backpack - TNF Black/TNF Black - One Size