Outdoorgrrl wrote a review of Grivel Mago Bag on July 2, 2013
Familiarity: I've put it through the wringer
I've been climbing with the 14L version of this pack for several months now. It's so comfortable I almost don't know I'm wearing it. It fits a 1L collapsible water bottle, approach shoes, down vest, wind shirt, car keys, hat, snacks, camera and route description. The front "cell phone" pocket is too small for a cell phone, but just right for a two-way radio. I also like that you can detach the shoulder strap and the cross body strap to make it easy to get on and off.
I knocked a star off because I think it would be more functional if it had just one main pouch instead of two.