Cold here in Vermont and I need some new gloves. I need something to wear on the walks I take with my wife every evening. Roads are slippery, so I need to have my arms free for balance, etc. I do NOT need to use my hands for anything, so flexibility and movement are NOT issues. Warmth is what I need. I tried a pair of battery-powered gloves and they were almost useless. No heat in the fingers. Mittens came close, but still not enough. Anyone know of any thermos bottles for hands?