This is a really good bag. I debated forever on what to get, but finally decided to go this route. I was looking for a day pack, but not something super tiny.

I think the 34 is really a great balance for a good day hike. It can hold quite a bit, but shrinks down nicely when you don't have a full load.

The bladder storage is way better on this than on my old Stratos 40, I'm happy to see that. I don't think you can easily stick one in the vented backpanel like on the Stratos, but I'm must less likely too as putting it in the bag doesn't seem to kill storage like it did on the Stratos.

Inside out compression is cool - I can still stick stuff in the side pockets when I have things compressed well.

The other commenter mentioned weight - yes, don't plan on a heavy load with this. But it does do really well in 20ish pound range. And it feels so good on your back!

If there is anything I'd like to change - I'd really like this more like the Atmos line with more durable straps, slightly more padded belt, etc. I also miss the zippered compartment access on the Stratos 40. But all in all, quite happy.

WOW this pack is light!!! I normally carry a REI Flash 18 for all day hikes, and I definitely push its capacity, and the lack of a real hip belt can really kill my shoulders after 12-15 miles.

With the Exos 34 i definitely have a little more room than i need, but this will surely fill up once winter comes. The hip belt isn't made for a 40-50lb load, but for the 25-30lbs that this pack is made for it is perfect. Of course the ventilated back is great, especially here in Arizona, you can really feel a nice cool breeze sneak between you and your pack, SWEET!

I am still a little worried about the durability of the buckles and cinch straps, so i always carry at least an extra hip buckle with me. So far though, no problems, it might just all be in my head.