SKU 8481550 Keep cozy—without the added bulk!—on the slopes with the Thorlos® Ultra Thin Ski sock! Sold as a one-pair pack. Thermolite hollow-core polyester traps heat and maintains warmth. Moisture-wicking properties keep feet cool and dry. Flat-knit seams. 65% polyester, 29% nylon, 6% spandex. Machine wash cold, dry flat. Made in the U.S.A. Made in the USA. View Zappos.com Glossary of Terms Thorlos Ultra Thin Ski