You close this hiking backpack with a buckle and lid. This hiking backpack is made exclusively from nylon and it is targeted towards men.
From Amazon
Osprey Europe Aether 55 Men's Backpacking Pack Black - L/XL
GearFreak.uk
Osprey - Aether 55 Hiking Backpack (58L) Large / XL Black
Trekkinn
Osprey Aether 55l Backpack Black L-XL