This backpack is one of the most comfortable, adjustable backpacks ever made. This is a few years old so I found a youtube review for this model: https://www.youtube.com/watch?v=PH7WyTViZ4c
The pack has many pockets and attachment points for multiday hiking and access to your stuff. Lots of compression to get your load to not move while hiking. The current version have been stripped down a bit to reduce cost. This pack was almost $400 when new.
Nearly waterproof zips with excellent padding.
If you are just getting into hiking, try this pack before investing in your "forever" pack. Things like access, compression, organization and comfort will make sense immediately.
north face, osprey, rei,
Women's size medium but these have overlap and fit men as well. The primary difference between men and womens is the curve of the shoulder straps.
https://www.gregory.com/fit-guide.html.