We actually returned this pack before using. We had a few issues. First, the pack did not fit well for Nancy, it actually seemed just oddly shaped. For instance, the load lifters ended too short, they needed to be longer. Neither the hip belt nor the harness seems quite right, I have a lot of experience fitting packs and backpacking in general, but could not get this pack to fit her well. Second, little details seemed dubious. Like the mesh shoulder straps and back panel that would seem to be abrasive to bare skin, or the oddly constructed hip belt pockets. We really appreciated the natural color, but little else lined up for us.

My husband and I have been carrying the his (atmos 50) and hers (aura 50) of this pack on our multi-month long journey through SE Asia and we love them. They're well designed for weight distribution and organization and the air strip is perfect for the super hot weather, so they're very comfortable. We considered many different sizes and brands and finally settled on this one, I'm glad we did. It's the perfect size for long distance travel. We're not gear heads and we didn't bring along camping equipment (who needs it when a room is just $4/night and there's not many safe places to camp anyway), but we have everything we need for life over a few months packed inside with plenty of room for souvenirs. Most people we see have bigger packs and they look tired and silly carrying way more than they need. If you're considering this pack for tropical travel, it's perfect. You don't need any bigger.

Due to the ventilation system, this pack hangs several inches off of your back. It is not comfy holding more than a few pounds, and I constantly feel myself arching my back to counteract the weight distribution. I wish osprey would have put the kesler suspension system with the aura straps, waist belt, and cute color (all of which are awesome)...that would be a steller pack.

Used it 3 days on Ozark Highlands Trail in Arkansas... She loves how lightweight and comfortable it is.