I haven't used them but sell under armour products and know that they might not look like much but they're fairly warm, don't know if I'd wear them in this type of weather, they're more of a baselayer to go under heavier gloves since they're tight enough. If you're talking the heavier version I'd imagine they would be amazing in this weather. I use Hot Hands gloves I think they're sold at Scheel's, haven't gotten cold yet but thats also because half the time my hands are in my pockets too.. ;p