Do a search and you'll come up with quite a few threads...I have one and love it.
The arrows are protected, and don't rattle when you move or walk as it conforms to your back. Arrows are easy to pull out without a lot of motion, and the storage pocket is great.
The only con I can think of is, some type of storm flap or debris cover would be nice to cover the access hole, although I put a coat of vaseline on my broadheads in case of rain...water does drain well out of it.
Great product in my experience, I'm sure others will chime in with similiar comments.