This is a Yamatoya Zeles System (cross-strap) backpack. I received this item new from another seller, but I ended up buying a different size Yamatoya backpack, so I won't be using this one and am putting it up for sale. I've used it outdoors about twice. The size is shown in the photos with a ruler, but the official size is as follows: Height: 36cm Width: 24cm Depth: 14cm Capacity: Approximately 11 liters Weight: Approximately 450g I will pack it compactly for shipping.