Ronald R.wrote a review of Kelty Redwing Backpack - 2650-3100cu in on December 31, 2012
Familiarity: I've used it once or twice and have initial impressions
I mainly got the 3100 for travel and when I did thought it might be too large. I took the hard piece of plastic board out to make it compress and that worked great. You can also remove the composite stiffener bar to compress even more. Still a little heavy, but comfortable.