These Federal model wool socks were initially designed for the Canadian Army. That is why they are also available in khaki green. They fit both men and women alike and are composed of 75% Wool and 25% Nylon. These federal wool work socks come in either Grey or Army Green. They come inmen'ssizes 8-13. These work socks feature heat regulation, moisture control, naturally anti-odor, fire resistant and easy care. They are considered boot style socks reach approximately mid-calf height and are authentic woolen sock made entirely in Canada. Men's Federal Wool Socks