Premium quality extra warm thermal wear. Fiber: 53% Polyester and 47% Cotton. Machine washable. Tog rating 0.45. Ribbed construction to shape the bodies natural contours. Soft brushed inside to maximize the amount of warm air held close to the skin. Elasticated waist stretching to provide a great fit for all-day comfort. Cotton blend providing natural softness and warmth. Ideal for very cold winter days or the ski slopes.