The one I was looking at was rated for a 30-35 pound load, I’ve been looking at tents and sleeping bags, trying to find quality, lightweight gear.Always start with loose straps. Tighten the hips first. Then the main shoulder straps, but not too tight. Then chest connector. Then go back to main shoulder straps and get the load balanced well. Then the fine adjustment straps last and those should be adjusted during a hike.
Osprey packs used to be excellent for light to medium loads. Well made with good venting. But not very light weight. I’ve not looked at them in 3-4 years but I assume they are still good for light to medium loads.