Julia Z.wrote a review of Osprey Packs Raptor 6 Hydration Pack - 360cu in on October 21, 2011
I use my raptor 6 mainly for mtn biking and it's the perfect size. I used to borrow a friend's raptor 10, but I got the smaller size so i wouldn't have to carry so much weight on the bike. It's great for hiking too - even though it's only 2 L, I can carry my nalgene in the outer stretchy pocket. The magnet for the bit valve it totally clutch and one of the main reasons why I prefer the osprey over cambelback; as well as the pockets on the waist strap. All in all, love this bag!