Jesse wrote a review of Osprey Packs Raptor 6 Hydration Pack - 366cu in on August 13, 2014
Familiarity: I've used it several times
This pack is a great size for a full day ride. Tube, bike tools, patches, pump, 3L of water, food, and a thin jacket all fit. Well organized inside. Waist belt zipper pockets are awesome!
One important complaint though: The 2014 bladder lid is terrible. It is very hard to get my fingers between the frame and the cap to screw and unscrew it. Also the lid keeper is very tight and makes it even harder to screw, I removed my lid keeper. One time I thought it was screwed tight only to find out that I had cross threaded it and it leaked all over the place.
Stock photo: try to get your fat fingers in there with enough force to close the lid. Harder than it should be.