I purchased this heated cap for myself for Christmas after having one of their heated vests. The vest works so good, I thought the hat would be as good. Well it was! It was very cold on Christmas here in Illinois and I had the hat on when I was outside and it really warms up and keeps the head warm. I am an avid deer hunter, and at my age, my ears would get very cold when sitting out in the tree stand. After turning the hat on, I quickly felt it heating up. The whole time I was outside, my head/ears were definitely warm! I would highly recommend this hat for anyone that spends time outdoors!