You close this hiking backpack with a buckle and roll top. This bag is made from synthetic material and you can put various small items in the inner pocket.
From Alpine Trek
Ortovox - Trad 30 Dry - Climbing backpack size 30 l, blue
WildBounds
Trad 30 Dry
Hardloop
Ortovox Trad 30 Dry - Climbing backpack Blue Lake 30 L