Bought these for my 18 yr old son. Says they are the most comfy, warm boots ever! He loves, loves, loves them! Wears them every day. Able to test out in many conditions in short time he's had them (about a month) Warmth and waterproofness in extended time in bitter cold and deep snow; then ice storm - sure footed when it was almost impossible to stay standing up; then a thaw - tons of slush (some mud too) then more snow etc. These Keen Summit County's stood excellently in every test. Cold or wet never had a chance. They feel like toasters on your feet, yet your feet never get sweaty or too hot even when it's warmer, you're active or indoors. He's had other good quality, very well insulated boots but these are much better. Their usability is also much more than expected as they are so comfortable can wear for any activity, hiking, camping, work, school etc. and everyday footwear - not just an excellent "bad weather" boot. This is our first Keen purchase; we did not know what we were missing!

My only complaint is: They do not sell these in women's sizes. (a further cautionary fyi on these boots in general also follows) Needing a good pr of winter boots myself, and after being so impressed with these, I searched. I found that these go down to men's 7. That would normally still be too big for me as I wear a woman's 7 but everyone says to size up in these. (Went up 1/2 size w/my son's but maybe didn't need to in his case. Measures just barely 11.5, got 12's in these. Says they're fine - can wear various socks and since the laces go almost to the toe they're very adjustable) These being such great boots, I took the chance and ordered the men's 7 (avail from another company) for myself. I was really in a quandary since yes, they were very comfortable and WARM but unfortunately they were a little too big and could feel slippage while trying several different socks walking around the house. So sadly had to send back. (If you're a woman's 7.5 - 8, the men's 7 will prob work.)

Here's the "but": The leather all the way across both toes/tops of "my" pair were pretty severely warped/buckled starting @ rubber toe cap (like they put the toe cap on too tight or was too small creating 4-5 soft ripples) and one toe cap was slightly crooked. My son's pair are very well constructed, perfectly symmetrical etc. (We're the type of people who notice stuff that maybe others don't-he only noticed a speck of glue @ the sole on his) His looked beautiful and seem like they will last forever. This buckling was very obvious and looked terrible. It is right across the toe on both so can't imagine anyone missing it. I still think these are great boots, so good, that I would put up with a bad cosmetic defect like that if they were discounted. (these were not) I mention this, since when reading reviews others had also complained of various workmanship defects etc. So am concerned and warning of possible quality inconsistency.

I ended up getting the women's Keen Alaska at a deep discount elsewhere. (They are on sale @ Amazon now)  I do really like them as they are also VERY comfortable, warm, waterproof w/fantastic traction and will prob last a lifetime. (one tongue is just slightly crooked for those who care/notice that stuff) I would rather have had these tho since they are much more versatile.

All that said, both styles of our Keen boots are so warm and comfy, it is definitely worth the chance w/their QC.