I honestly think this boot is fine for MOST people. However, I live in Ukraine where we average winter temperatures with days that are -4F (-20c) low to 9F (-12C) as the high temperature of the day. These boots are rated to -40 so that should not be a problem. However, I bought this boot along with the Muck arctic sport. I wanted to like these boots more because they are more feminine, pretty, and light weight. To test them before making a decision, I put on both boots and then put my feet into ice water where someone kept supplying the ice. I had on smart wool socks. I then sat there with one boot on the left (bogs) and the other boot (muck) on the right. After a while, say 10 minutes of sitting my toes started to go numb in the bog boot. Not painful yet but numb and my foot was cold. Meanwhile in the Muck boot, my foot wasn't cold at all. I know the water was not -40 degrees or anywhere close to it. So my guess is that if you live somewhere where temperatures are around 32F (0C) you will be fine. However, if you live in truly cold temperatures say Canada, Montana etc and you must be sedentary outside (waiting for bus, snow mobile riding etc) I would go for the muck. On a positive note the bog boot is very comfortable! It was true to size for me too. Also not nearly as heavy as other snow boots, and very pretty! It's just a lie that they work down to -40F or anything below freezing really.