ALPINESTARS KX WINTER SOCKS ALPINESTARS KX WINTER SOCKS ALPINESTARS Alpinestars KX Winter Socks are developed for cold-weather kart racing. Winter kart racing requires a perfect balance of breathability and moisture wicking to keep the driver focused and in-control. Alpinestars Sets the standard in Winter Kart Racing Socks with the Alpinestars KX Winter Kart Racing Socks. You will see them worn by the best of the best, in every track, in every country, for that reason. The Alpinestars KX Winter socks have Thermolite® fabric main construction. Moisture wicking and excellent breathability, these will help you keep your feet warm, dry and comfortable on the race track. Details: Manufacturer: Alpinestars Manufacturer part number: 4706012 Colors: Black Sizes: S/M (6-8.5 US), L/XL (9-12 US) Thermolite main construction. Low calf cut Designed to help maintain a constant body temperature. Thermolite construction for excellent breathability and moisture wicking to help keep the warm cool and dry.