They are great. I have Raynaud's phenomenon and with an extra pair of lined gloves (sold separately) my hands stay warm most of the time. Obviously the mobility isn't the best but I was looking for a pair of gloves that would keep my hands from going numb and they did the trick. I have tried many gloves including battery operated gloves that cost over $200 and they have not worked. However, remember that there are certain conditions when no glove can prevent the loss of sensation in your fingers when you have Raynaud's disease, but they have worked as well as I had hoped, even during the polar vortex in the past. Winter. I highly recommend these gloves.
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