Some mittens make your fingers feel like they're trapped in a straitjacket, but at least there's the L. A. M. B. Women's Warmest Mitten with an articulated fit for freedom of movement. When the temperatures plummet on top of the mountain, the 550 fill down insulation traps heat in the center, and the added Thermacore insulation helps regulate it throughout the mitten. To make sure warmth doesn't escape through the cracks, the Warmest Mitten has a durable two layer DryRide Durashell combined with an advanced waterproof DryRide Insane Membrane 2. 0, which wards off fresh pow and slush storms. And in case you want to post a nothing stops me! selfie, simply use the touchscreen compatible Screen Grab technology on the thumb without exposing your digits to the cold.