I had a pair ten years ago that I used with some EMS shells. They seemed very warm. I have Reynaud's phenomemon (cold hands and feet a lot of the time), and they were a bit tight, so as soon as my circulation slowed, that was it-- cold hands. I eventually bought new, looser mitts and gave the Dachsteins to my skiing son, who still has them and loves them. They weren't as think as I thought they would be either, but still are thicker than most wool products. Never tried the hats, so can't say.