U.S. Merino Wool: We source our 100% U.S. grown merino wool exclusively from sheep raised by American farmers on American farms. Merino wool keeps you cool in the summer and warm in winter. Non-padded design that won’t add bulk to a high-performance boot fit. Seamless Toe creates a totally flat connection in the toe box, reducing bulk and eliminating blister-generating friction. Durability Assured: Reinforced construction and low-stress seam placement reduce wear and tear, increasing the life of the sock. The ultralight Wilson ski sock combines the warmth and moisture wicking benefits of 100% American merino wool with a super low-profile, non-padded design that won’t add bulk to a high-performance boot fit. Wool fibers next to your skin naturally regulate temperature while built-in comfort compression helps reduce foot fatigue during a long day of floating through powder or carving up hardpack.