Terramar Thermasilk Glove Liners add an extra layer of protection. They really do keep your hands warmer and fit well underneath gloves.
I’m a big believer in glove liners. Alan doesn’t think they are necessary. My hands stay warm on our winter adventures while he complains of having cold hands. He really should listen to me and buy a pair of glove liners, especially before our December 2015 Antarctica trip.