Absolutely love these gloves. We've had a very mild Winter here so far but on the day I received these gloves the temps didn't go above 18F. I was able to test them out while doing some work on my car (outside) and they held up great. Of course this was my first time using them but most "high quality" gloves I've owned failed within hours of using in extreme cold. They're a little bulky but as a trucker I appreciate the bulk. As with any Winter clothing you have to be producing body heat for them to work properly. Boots. coats, gloves hats...etc, if you stand around in the cold not doing anything you will get cold. What matters is how well a Winter clothing item holds in heat and lets moisture out. So if you're inactive for long periods of time I don't care what you're wearing, you're going to freeze. In my opinion these gloves use your body heat efficiently. Who knows how long they will last but I'll certainly update my review if anything unusual happens with them. My only issue (if at all) is that they take a long time to dry up after getting wet unless you place them near (not on) a heat source. I tested the Waterproof claim by sticking my hands in the bathroom sink full of water for about 20 minutes and not a drop of water got through but the outer shell took hours to dry off. So if you're going to be using these for prolonged cold/wet exposure to the elements I may be a little concerned about the gloves freezing over. Man, I hope these last!