Just finished three days hiking over the Tetons. Fully loaded my pack weighted 40 pounds this is about the limit of what I would carry in this pack. That being said if you are carrying less than that this pack is very comfortable and adjustable. It has a great set of features it would be nice to have an integrated raincover but that's not a deal breaker. I highly recommend this pack.

Brain can't be used as a daypack
Does not include rain fly
Large was almost too big for me and I'm 6'4"
Breath-ability was fantastic, pack did not strain my shoulders, large easy access pockets on the hips great for storing snacks, very well made, and of course lifetime warranty!

I spent a lot of time trying on different backpacking packs, and I kept trying to find a cheaper option, but this bag was so much better than the rest I ended up just buying it! I love it!

I've only had this out on one hike but it was a game changer over my old pack. Make sure to measure for the correct sizing, both pack size and hip belt sizing, and then get the hip belt molded to you(your waist/hips will thank you after your first real use). It was a tight squeeze to carry an early spring backpacking load for a 4-day Smokies AT section hike. The AG system is unbelievable how it makes 35# load feel lighter than 27# did in my old pack. The detachable lid/day-pack works great for base-camp day hikes as well as for using the pack for civilized travel as well. Almost everyone in our backpacking group has converted to AG packs after seeing them in action.

good backpack and fit

I ordered this pack for my Havasupai trip in October. It’s going to be a 5 day trip and needed something big enough to haul all my gear and supplies for that length. I’ve tested it out on shorter trips and it fits like a dream. So much room and so many features. I can fit so much and the weight distribution makes it feel less than it is. The ventilation for cooling will be very helpful in the desert.

Has many options for separating colors, socks, underwear, whites, and an accessory pocket for loose change and crumpled dollar bills. Couldn't ask for a better basket.

What a beauty! I love my Atmos AG 65. I got my wife the Aura AG 50 as well because I figured it would be the best pack to get her. The quality of these backpacks is remarkable. Also, the lifetime warranty is unbeatable.

Comfort was key in decision making. We used the size chart and everything matched up great!

This is by far the best backpacking backpack I have ever owned. I love the back padding because it breathes so well while I hike. I also love the adjustable shoulder straps. I wish It had a side zipper or bottom zipper so I could reach my supplies without having to pull everything out of top to get something in the very bottom. Lots of places to hook carabiners to carry other stuff. So over all I really love this pack!