After a long day kicking in a steep bootpack in your ski boots or navigating glacial ice in a pair of crampons, the first thing you're going to want to do once you set up camp is give your feet a much-needed break in the Western Mountaineering Standard Down Booties. Lightweight by design and packing a high warmth-to-weight ratio, these booties are packed full of 850-fill down for supreme warmth and treated with a DWR finish to keep the down lofty and warm in the face of snowy base camp kitchens and late-night walks out to the groover.