When winter starts to play peek-a-boo--now you see it, now you don't--slip on the Marmot Exum Guide Undercuff Glove before heading outdoors. Designed for days when temps may vary considerably from morning to afternoon, the Exum delivers a touch of warmth on chilly mornings along with breathability and substantial wicking power for warmer afternoons or a brisk ascent up the skin track.