Rick wrote a review of Osprey Packs Raptor 10 Hydration Pack - 610cu in on August 24, 2013
Familiarity: I've used it several times
I have had quite a few hydration packs over the last few years including camelbak and Thor, and over time the bladders leaked or the bags physically fell apart. I just received my osprey raptor 10 a month ago and this is by far the best hydration pack I have ever owned. The bladder is plenty large enough for a multiple hour trail ride, and the tool pouch in the bottom is perfect for a spare tube, multi tool and a few tire levers. The pack has a few other compartments that allow you to put some extra gear in and the included helmet hanger is top notch. The bladder cap can be slightly finicky to get on but it has never given me any problems are leaked after tighten correctly. The bladder is also very easy to remove/install. I feel very comfortable with it loaded up and on my back Forman afternoon of riding. Stop looking at other bags and get this one. Top notch quality and performance.