One of the closure mechanisms on this hiking backpack is a buckle, lid, and zipper. One of the materials used to make this bag is polyester and things you want to keep extra track
From Amazon
VAUDE Hiking Backpack Brenta, blue 30l, Trekking Backpack for Women & Men, Comfortable Backpack Hiking with Integrated Rain Cover, Practical Compartment Layout
The product is available from £92.24 at international stores.
Trekkinn
Vaude Tents Brenta 30l Backpack Blue
Hardloop
Vaude Brenta 30 - Hiking backpack Blue 30 L