Thanks Jim, Now I remember you talking about modifying your bag. I do get a bit claustrophic in a bag, so a bit of room for me is good. I think one of the stores around here has WM bags, so I may go up and start looking at them. May not see a Puma, but something close.

Duane, I have no idea when I'll get to Yellowstone, just a nascent plan to go in winter for a week or so, maybe next year in March? I think there will be plenty of snow there then. I was there years ago as a kid, but that was in summer.