I am delighted to report that the rabbit skin blanket performed beautifully at temperatures to 33 degrees. The overnight low was 29 degrees, and I felt it still would have held up at that temperature. I was warm and cozy, except for my face and feet. This experiment was conducted outside without the benefit of shelter, that means the layers went skin, t-shirt, sweatshirt, blanket, atmosphere. So with only the addition of two thin layers of cotton, that blanket cheerfully maintained a temperature differential of 65 degrees while being an inch and a quarter thick. Amazing. I fell asleep for a while out there on the ground, I was that protected. If there was one piece of Stone Age gear I’d take with me in an emergency, I’d have to say this is tops so far.