The adidas Runningxub23 Sock 1pp HEAT.RDY is designed for runners who want maximum comfort. These unisex crew socks feature FORMOTION technology for adaptive support and HEAT.RDY for optimal cooling. They are made from recycled materials and offer anti-blister yarn on the toe and heel, unique cushion pods for the Achilles and ankle bones, and arch support. The socks also feature mesh ventilation for breathability and flat toe seams to prevent blisters. Padding in the heel cushions every foot strike.