Here is one thing that I didn't know. There is such a thing as a heated vest. Seriously, a heated vest. Where have these been all my life. Here I have been golfing in the spring and fall and freezing my tail off. Not that the vest would help keep my tail warm but it sure would help keeping things warm on the golf course. They are powered by a Lithium-Ion Battery and one charge will last for about five hours of heating time. That is truly amazing to me. I would have picked up one of these years ago.