One of the closure mechanisms on this hiking backpack is a buckle and zipper. This hiking backpack is made exclusively from synthetic material and it has a 26-litre volume.
From Wardow
Vaude Magus 26 Hiking backpack blue
Trekkinn
Vaude Tents Magus 26l Backpack Blue
OnBuy
VAUDE Unisex Magus 26 Backpack 20-29l