The Compressport Pro Racing v4.0 Ultralight Run High socks are designed to provide optimal thermoregulation when training and racing at high temperatures. The ultra-lightweight mesh fabric is designed to fit like a second skin. They offer optimal breathability and quickly wick away sweat to keep the foot cool and dry even in tropical climates. Their toe cap, with a new wider design, offers a more ergonomic fit and improved proprioception, allowing the toes to grip intuitively when stepping for a fluid and natural stride. A special fabric around the ankle, lighter than classic running socks, provides good support during exercise. Compressport's signature bridge support prevents the fabric from twisting and irritating the skin in the heat. In addition, the plush reinforcement around the big toe prevents the nails from blackening over the miles. The unique 3D.Dots and the new Falt.Dots of this ultralight model save volume and weight but offer the same high performance advantages.