Carhartt socks - cold weather boot type

Carhartt Cold Weather socks provide the insulation that you need to keep your feet warm on the jobsite or in the woods. fully cushioned foot and lower leg nylon reinforced reciprocated heel and toe flat toe seam 62% Hi-bulk acrylic, 20% stretch nylon, 17% wool, 1% Lycra®. Medium fit men's shoe sizes 5-8.5. Large fit men's shoe sizes 9-12.5. XLarge fits men's shoe sizes 13-15.