I got my first glimpse of the Atmos AG back in May 2014, when I visited Osprey over in Poole to write an article for The Great Outdoors magazine on how the company develops its backpacks and to interview the big ideas man himself, Mike Pfotenhauer.
After a sneak peek of the pack and its AntiGravity back system, which made the load feel remarkably light, and its unique, fully-ventilated, hugging hip belt, I wanted to take it for a proper test ride.
Thankfully, roughly one year later at a Snow+Rock training day in the New Forest, the good people at Osprey granted my wish and sent me back with a new and shiny Atmos AG 50 to trial.
The Atmos AG has a number of other features which make it an excellent pack: the stretch mesh side pockets are ideal for storing bottles; the sleeping bag base compartment with internal divider is large enough to squeeze in a two-man tent; the integrated rain cover sufficiently coats the pack and the removable top lid means that you can cut back on weight for smaller trips (for longer treks, the Atmos AG 65 has a little more room, but the AG 50 easily carries a two-man tent, sleeping bag, inflatable sleeping mat, clothing and accessories for two nights of camping). There are even loops and attachments for walking poles, ice axes and a shovel handle sleeve for even more easy access.