The Pro Racing Sock Bike have been completely foot designed to improve aerodynamics and comfort. They now offer even more support and ventilation for long days in the saddle. A striped fabric around the foot and on the back of the sock quickly wicks away sweat and moisture to keep feet cool and dry at all times. The designed, wider toe box also offers improved proprioception while pedalling. The signature metatarsal support ensures a secure fit, promotes circulation and prevents the fabric from twisting or creasing: no more hot spots or irritation on long rides. Two rows of 3D. Dots reach halfway up the Achilles tendon and provide additional support when you get out of the saddle. In addition, a row of Flat.Dots provides additional ventilation. Under the foot, a pattern of 3D.Dots and Flat.Dots provides additional support in the shoe as well as a light micro-stimulation that activates venous return and delays fatigue. The sides of the sock are equipped with Aero.dots technology from the ankle to the shaft, which directs the airflow to reduce turbulence at the back of the sock and reduce drag as speed increases. The high cuff has been specifically designed for the demands and aesthetics of cycling while complying with UCI limits. The stylish tab on the back of the sock adds a touch of class.