Let me start with the most important thing: the manufacturer has recently stated that this backpack is 25L. In my opinion, 18L is the main compartment, the side pockets make up the remaining volume. I think this is the ideal backpack for a one-day trip or an overnight stay outdoors if you know how to pack. The carrying system is fine for small backpacks. Even when fully packed, it's very comfortable to carry. The three external pockets are very useful as you can fit a first aid kit, poncho, and cooking set in them. A big plus is the "molle" belt (cleverly hidden), where you can attach handy gear with a carabiner, such as gloves or a cup. The pass-through pockets are also good, where you can safely store something like a hatchet. Overall, in my opinion, it's a very well-thought-out backpack for people who want to spend several hours outdoors without any worries. PS. The color is out of this world. The person who came up with it should get a Nobel prize in the bushcraft category.