Osprey Atmos AG65 for sale. I purchased this in 2018 and only used it on 3 or 4 short backpacking trips. It is in excellent condition and looks practically new. I replaced it with a lighter pack (REI Flash 55) but kept the Osprey around as a back-up. However, I haven't used it in over 4 years, so I'm selling it. A large Osprey rain cover is included, which has never been used.
The only modification I made to the pack is that I cut extra webbing on the waist belt (see the second photo). The webbing was extremely long and would flop around when I hiked. I have a 31-inch waist and when the pack is tightened on me there is about 8 inches of extra webbing on each side. So, I suspect as long as your waist is around 38 inches or less there is plenty of webbing for adjustment. Finally, the pack is a bit creaky. Apparently, this can be reduced (for example, see https://www.youtube.com/watch?v=Rwonam-COuQ) but I haven't tried it.
Let me know if you have any questions. Thanks for looking, Brian.