Maybe everyone uses them to drive a car with a fan heater. But they DO NOT WORK for hand warming. I wore them for about an hour in 40 degree weather. My hands were still very cold. They are SUPER thin and feel like those cheap gloves you can buy at dollar stores. They have grips that are great for holding a phone or device, and the touchpads work well on my phone (Android with tempered glass). I would give good grades for that. But almost useless for warming hands. Really disappointed. and not that I expected much. But you should be able to walk in them without putting your hands in your pockets to keep warm. I take a real pair of gloves to pull them over and use them to touch my phone.
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