Merino wool is perhaps the best natural product for heat exchange and regulating body temperature. Merino wool socks are such excellent quality that you'll want to wear them even in warmer weather. The Tuareg in the desert know only too well that wool keeps you warm in the winter and fresh in the summer. Our Ergo socks are ergonomically designed to fit the foot and are thin enough to be worn with any kind of shoe, cycling or otherwise. They use a low level of compression which increases circulation and the body's natural ability to regulate temperature.