The belt and shoulder straps have been updated. Belt slippage was one of the things Steve was focused on with this belt.
I've been using the biggest bag on (I think) a 25" frame, and I like the height of it. Not sure what the frame height is in that photo above. My favorite bag of all time, the Kifaru Timberline, has a tall snow collar like in the photo above, and it's great when you have a huge load because it keeps the weight where it should be. The shape of this bag is very similar to that imo.
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