This hiking backpack closes with, among other things, a buckle and lid. The material of choice for this bag is nylon and it has a volume of 44 litres.
From Alpine Trek
Osprey - Talon 44 - Walking backpack size 44 l - L/XL, black
Scandinavian Outdoor Store
Osprey Talon 44
This product is also available at 1 unverified store.