Extra Large, Gray & Black, Diabetic Thermal Sock, A Relaxed Fit Leg, Fully Cushioned, Very Warm & Has A Long Wearing Sole, Perfect For The Person Who Needs A Looser Fitting, Thermal Boot Sock, 65% Acrylic, 20% Merino Wool, 10% Stretch Nylon, 5% Stretch Polyester, Fits Shoe Sizes Men's 12-15.