Pushing your limits on the trail is a lot easier if you have something to drink. The DAKINE Women's Amp 12L Hydration Pack was built for serious female athletes to carry just the essentials, such as repair kits, media players, sunglasses, and maybe some snacks. The low-profile design and women-specific contoured harness means the Amp 12 won't sway as you're turning corners or climbing up rugged terrain. Other features include a secure helmet carry, a deployable rain cover, and a removable waist-belt.
I bought this bag for my girlfriend and she loves it, it holds the perfect amount of gear for her. The rain cover is an amazing idea, that will be a life saver. This bag also has a ton of small compartments and a big bladder.