I was really getting tired of cold wet feet. Every winter boot I had owned had issues.  Either they were comfortable but not warm enough. Others kept my feet dry but were too heavy. After almost slipping and falling with my child in my arms trying to avoid a puddle I decided that I really needed a good boot.  I did some research and Bogz had good reviews for both keeping your foot dry and warm.  They did not disappoint.  They are so easy to slip on (even hands free.)  I can walk through icy slush and I don't feel a thing. They keep my feet warm. They are also very comfortable. I don't think they look too bad either.  For best results, I find that you need to start with a warm foot to have your feet stay warm in your boot. I would say it is like a thermos in that regard, it will maintain the temperature of what you put in it. I wear them with a wool sock and I'm in toasty foot bliss. The best part is I can just hose them off come spring and they will look good as new.  Really the only bad thing is that if I'm indoors for a while with these boots on they get too warm. I wear an 8.5 and I purchased a 9 and found the fit to be perfect.