This hiking backpack closes with, among other things, a buckle and zipper. If you prefer blue backpacks, then this should you just fine.
From Alpine Trek
Osprey - Stratos 36 - Mountaineering backpack size 36 l, grey
The product is available from £153.80 at international stores.
Hardloop
Osprey Stratos 36 - Walking backpack - Men's Cetacean Blue 36 L
This product is also available at 1 unverified merchant.