Research in the wind tunnel shows that lycra material gives less air resistance than bare skin, or an interwoven material. For surfaces that hit the airflow head-on (such as the upper arms and shins), lycra material with a vertical ridge structure came out of the wind tunnel test fastest. We incorporated this material into our socks to create a maximum aerodynamic advantage.
The base of the sock is made up of the same breathable materials as our qskin socks:
80% Polymide, 20% Elastane, light compression socks