You close this hiking backpack with a zipper. The material of choice for this bag is polyester and it has a volume of 28 litres.
From Wardow
Vaude Wizard 24+4 Backpack black
The product is available from £88.05 at international stores.
Trekkinn
Vaude Tents Wizard 24+4l Backpack Black
This product is also available at 1 unverified merchant.