I bought my Lucent heated gloves from REI but after a month of use and frozen fingers, I handed them back. I am a ski instructor in Alaska and suffer from Raynaud's - we can be teaching in temperatures ranging -30 to mid 30's. I am so used to having frozen hands that I had high expectations from the amazing reviews from customers that these gloves would help ease the pain of Raynaud's. I can be outside for hours and I do not have the luxury to warm up in between students. I would preheat the gloves before heading out on the slopes and from there onwards I would put them on high when on the lift and use the medium setting in between to save the battery life. The truth is that the gloves would warm up the back of my hands and my fingers would be constantly frozen and in pain. The low setting is pretty useless and you can't even tell that they are on. The gloves are well constructed and waterproof but they are quite bulky to use for ladies with very small hands especially when holding onto ski poles (you can't tell that you are actually gripping the pole) or helping students. The battery connectors would get loose occasionally and I would think that they went working but would realize that they had come apart and needed to be pushed back together.