Extreme weather calls for extreme protection and Carhartt Men's Arctic Heavyweight Merino Wool Blend Boot Socks offer just that. Made in the USA, these men's socks keep you toasty in the coldest temperatures with heavyweight merino wool. Abrasion resistant yarns in heels and toes add durability and 50% temperature-regulating merino wool blended with 14% virgin wool and 36% synthetics feels soft on feet and legs. Sweat-wicking technology works on keeping feet dry while mesh insteps and ribbed channels on the legs allow for breathability and ventilation. For an all-day, comfortable fit, there is cushioning on the heels, arches, toes, insteps, and legs, and heel pockets and stretch tops to keep socks in place. Available in men's sizes Large (US Men's shoe size 9-11.5) and X-Large (US Men's shoe size 12-14.5).