This is by far the lightest pack I own. It is great for day trips and light overnight, in fact it is so light you could pack it for long outings(week) to one camp and having a day pack would be nice. All the material and quality are great...Osprey. The only things I can be critical about are I am not sure if I would have make the lid top pocket mesh, seems like it would be better off with the light nylon and keep out dust/dirt. The other is the side pockets are a little small, so hard to reach with the pack on. The reservior slot is open on top, might be an issue if you use it in winter but I dont plan too...I have other packs for that. Overall it is a great pack and the Osprey reservior system is awesome!