CamelBak Charm Women's 50oz Hydration Pack 2013
The Charm holds a 50 ounce Antidote reservoir, and has a small zippered pocket to hold spare tubes, credit cards, and a health bar or two. Due to its simplistic yet comfortable design, you'll practically forget you're even wearing a pack.
I am petite person 5'2" @ 100lbs and this camel bak is a perfect fit for me. I just started biking and this pak is awesome. Great price, and functionality