Definitely the best hydration bag I have ever owned. Put your hands down. The design is very beautiful and the pocket function is the most important thing. The straps and harness system are truly the most comfortable and supportive I've come across and I've used a lot of bags! I love both mountain biking and racing, so this bag fits both. In fact, I've been looking for a bag like this for a long time and it's great to see such an innovative solution from my favorite bag brand. Definitely a happy customer here. Highly recommend this purchase!