I use my REI Women’s Traverse Daypack on short day hikes and even full day hikes during the summer. For winter hiking and snowshoeing I use a larger pack.
What I like about this daypack is that it is designed specifically for women, so the shoulder straps are closer together and they are nicely padded. There are several pockets where I stash my 10 Essentials, including food, extra layers of clothes, and small items like my knife and whistle.
The waistbelt has a small zippered pocket, which I find convenient for storing my chapstick and sunscreen, and inside there is a pouch that is a good spot for my Camelbak water bladder.
The only drawbacks are that this 30L pack is too small for winter snowshoe trips where I carry more layers and food with me, but otherwise it is a good choice for a women’s daypack.