When you need tall boot protection without the bulk, slip into this tough as nails medium layer sock with reinforced heel, toe and shins pads so you won't feel any lacing pressure. Insulates when damp and itch free. Mid-Weight, over the calf. Made in the USA of 33% Merino Wool, 33% Polypropylene, 26% Nylon, 5% Elastic and 3% Lycra. Men's sizes S(wmns 4-7), M(5-8), L(9-12) XL(13-15). Kenetrek Canada Socks KE-1502