The Faith Ski Sock blends wool with acrylic, nylon, and elastane in a knee-high, terry-lined design built for a full day in ski boots. A flat toe seam and reinforced heel and toe cut down on chafing, while arch support locks the fit in place under pressure. What Our Gearhead(R) Experts Are Saying:"Six hours in tight-fitting boots and the flat toe seam never once rubbed. My arches stayed supported through the last run of the day the same as the first."