Hunter Welly Socks in Navy are available at Robert Frost Fine Footwear and www.frostshoes.com. A cozy boot sock made out of supersoft fleece adds warmth, comfort, and style to your favorite Hunter Welly Boot. Welly Socks are made of polyester and are machine washable. Sizing: M = shoe size 5-7, L = shoe size 8-10. Hunter Welly Socks in Navy are available at Robert Frost Fine Footwear and www.frostshoes.com.