Kate Williamson wrote a review of Osprey Packs Viva 65 Backpack - Women's - 3967cu in on June 13, 2013
Used this pack on a 3 day trip recently and was BLOWN AWAY with how well this one sizer carried 40lbs of gear! It was comfy, the foam never padded out so I didn't have to keep retightening the belt or shoulder straps, and the backpanel could adjust down to my smaller torso. Absolutely amazing.
Another different feature is the hipbelt. Usually, I have a hard time finding a hipbelt that can cinch down small enough for me. This hipbelt has a built in extender that can unvelcro and elongate the hipbelt for wider waists. Because of that, the existing hipbelt is smaller and fit my waist with room to cinch!
Hands down, this has to be one of the best carrying one-size-fits-most packs on the market. Amazing!!!