The Kynergy Infrared technology in the Crew socks’ fabric has been developed to both boost performance and speed recovery, helping you perform harder, for longer. The infrared technology assists with recovery, as the increased oxygenation of the blood hastens the rate of lactic acid breakdown and removal of waste products from the body. This unique material also promotes cellular repair and replication throughout the body, which helps to minimise Delayed Onset Muscle Soreness. The socks are designed with your comfort in mind, with cushioned heel and toes, and ribbed cuffs, making them great for a huge range of sports, including running, cycling, hiking, snow sports, and gym work.