I am downsizing my backpacking gear. As someone who used to be a backpacking guide for several years, I can say this is the best pack for this size range. You can't go wrong with an Osprey pack.

This is a green medium sized Atmos 65L mens pack from a few years ago. I am a woman though and it has been extremely comfortable for me. I have taken extremely good care of this pack, being very careful with it on trips and gently cleaning it after every trip. As such, it is in excellent condition. The close up photos show basically the only visible wear on the pack, just a few scratches on the top and bottom. There's even almost no evidence of dirt on the pack. It does not smell.

I am selling this pack as a package with its Osprey rain cover and REI travel duffel. You must buy all three items. The rain cover has only been used twice and the travel duffel has been used only once. Both are in new/like new condition.

I am selling everything together for $275. This is an absolute steal given the condition of these items, with the full price being $405 -- backpack ($325), rain cover ($40), and travel duffel ($40).

More info on can be found in these links:
Backpack, though mine is an older version so there have been some small changes: https://www.rei.com/product/201302/osprey-atmos-ag-65-pack-mens
Rain cover: https://www.rei.com/product/878468/osprey-ultralight-pack-raincover-large
Travel duffel: https://www.rei.com/product/118870/rei-co-op-pack-duffel-bag