I gave this as a present to a friend after buying my own, I live in a cold state and this gloves keep my hands warm... I have not used them yet in the middle of the harsh winter... but so far... my fingers stay warm when the cold wind blows. I love the fact that the thumb  is removable, I like to be able to feel and control the camera and most mittens keep the thumb covered. With this gloves you can uncover just the thumb and keep the rest of your hand covered and warm. Great invention.