My new #1 backpack for extended outings (I have many, many packs)

Have used this extensively over the last 6-8 months on long mountain bike and hiking expeditions, great pack. It has relegated my previous #1 pack (Osprey Talon 33) down the pecking order. Two front pockets are nice and large, the mesh is a bonus as so you can now see what is in the pockets. Nice large rear side pockets, easy access for a water bottle (I tied up the one side pocket so it could hold easily accessable bars, gels etc).

Great for the lower back, as it sits nicely on the lower back with the external frame (I never thought I would get an external frame again).

I would give it 5 stars but two things are missing, there is no quick access to the main storage area - side zip, zip from the back would be good. The other is there is no external access to the water bladder (one thing that made the Talon series great).

I tried this pack on in the backcountry warehouse just because I thought it looked cool, but after I was forced to bring out the plastic it was mine. It is super comfortable, light weight, and the perfect bag for summer as the mesh/foam backing has a breathable material that keeps the weight of the bag directly off your back. Therefore, it is the only breathable bag of its kind I have ever seen.
Check out:
http://www.ospreypacks.com/Packs/ExosSeriesSuperlight
and see for yourself, but if you get hot while hiking look into this pack. pretty cool for sure.

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.

I initially got this to use as a day hiking pack. While 34L is a bit on the large side for a day pack, I figured the pack is so light it wouldn't matter if i carried a pack with more capacity. This pack is ultralight and serves as a great day pack or ultralight overnighter. It is essentially a scaled down version of the 58L. There are 2 sets of side compression straps which really allow you to cinch the pack down if you need to. The pack is virtually weightless and the back panel provides nice air flow when you're on the move.

One thing I would note, the straps are thin around the whole pack and the hip belts don't have any padding. This is how they were able to shave weight. But the hip belt pockets are a great feature and if you are packing gear that requires stronger straps than the Exos, you're probably using the wrong pack to begin with.

As a note, I have the Talon 22 for a day pack also and that is a great pack, and I have the Atmos 65 for backpacking. All are similar packs in many ways and I would highly recommend them to anybody. Just be cognizant of how much space (liters) you will need.

Been wanting this pack for a while, finally ended up getting it as a gift. Love the compression system, the suspension is (obviously) awesome, and it has plenty of features for its tiny weight. No longer will i lug my 70L pig on weekends!

One thing worth noting- I'm a tall (6'4) skinny (175) dude, so I (thankfully) received a large frame pack. Fits great, except the non-adjustable waist belt has to be cinched down to the stitching to fit my waist. If i tone up my beer gut, it may not fit. Not that I was in danger of cutting back, but to more attractive mid sections, this may present a pickle.

I bought the Exos 34 specifically to use in long day hikes, foul weather, remote areas, etc, where you would bring more gear for safety. The capacity is definitely as advertised, and it was very satisfactory on several recent long day hikes and hut trips.

Best features:
1) A top lid with pockets on top and underneath - (too many day packs lack top pockets, which are super for fragiles like sunglasses, lunch and first aid items)

2) Pack rides away from back mesh, so air actually gets onto your back. Very, very nice.

3) Generous belt pockets so you can actually carry powerbars in them without cramming.

4) Stuff pocket for helmet or rain gear on back of pack, could be slightly more generous, but a super feature.

5) Side mesh pockets which can be used outside or left underneath the compression lacing. Access from top or side is excellent. Could be slightly more bellowed, - when pack is full, hard to cram a water bottle into them.

There's a tiny skinny pocket on the left shoulder strap which is too small for a cell phone - how about just a bit larger, and waterproof? This is an ideal place otherwise for this item. Ipods could go there as is, but would be hard to adjust without pulling them all the way out.

The color is weird. Something calmer would be nice.

This pack fit very well, rode very well, and despite the "busyness" of all the cordage and pockets, they are extremely useful.