Material: The mid calf crew socks made from 92.5% Cotton 6.7% Polyester 0.8%Spandex. Suggest machine & hand wash, tumble & air dry. | Comfort: Smooth toe seam and stereo Y-heel, full cushion soft towel fabrics suit for ultimate support in any work boot or shoe. They keep you feet warm without making them sweat, help you avoid blisters during your hiking, running or other outdoor sports. | Features