Pulled on at the base lodge before the boots go on, the Atlas Merino Snow Sock pads the heel and toe and adds ribbed support around the arch and ankle. Mesh ventilation zones keep air moving across the foot, and the merino blend stays lightweight. As a snow sock, it rises above the calf. What Our Gearhead(R) Experts Are Saying:"The non-slip folded rib band anchors the top of the sock, so it stays put from the first lift to the last run. The seamless toe box puts a smooth surface against my boot, which keeps rubbing off my toes all afternoon."