These boots are insanely warm (-40f) so for someone like me who's feet are ALWAYS cold or will be spending much time outside, I'm sure they'd be great. HOWEVER-Kamik boots run SMALL..& not just a little small, I mean like a size & a half..2 sizes if your not a "1/2". I have tiny feet..usually wear a size 6, after reading the reviews, I did what I always do w/"runs small" footwear & ordered a 7 ( I WANTED 7 1/2..but Kamik also does not make 1/2 sizes-convenient-**rolls eyes**) & I figured an 8 would be HUGE & rub on my heel, causing a blister. The "7's" I received felt more like 5's or smaller, thought maybe they'd break in a bit so I walked the dogs 30min in them..by the time I made it home I was limping, toes were cold & tingling from circulation being cut off, blisters everywhere, etc it was terrible. Sent them back & got an incredibly prompt refund, then went to a local shoestore (I will never, ever again buy Kamiks off the net, they're WONDERFUL boots..but something you MUST try on to be sure) & found a pair of -25 kids' boots, size 6, that fit like slipping my foot into a cloud AND...b/c they're kids, I paid 1/2 what I would have for "adult" boots. This was a great vendor & as I said, I swear by Kamik boots....but I also 100% recommend either buying from an actual, local shoe store or at least finding the type of boot ("Greenbay 4", for example) & right size from said shoe store, then looking to see if you can find it cheaper online.