The Hydrogen Aero Tall Road Socks use the same VaporRize™ Hydrogen yarns used in out Hydrogen Vent Tall Socks on the foot, but adds a rib knit cuff that gives you an aerodynamic advantage over normal socks. It's like getting free speed for your legs.

Rib knit cuff has aerodynamic stripe pattern, providing a speed advantage without needing a special fabric to be sewn to the sock. This allows for the ultimate comfort in this high-performance category.
VaporRize™ Hydrogen yarns are extremely lightweight and soft against the skin, placing an emphasis on moisture transfer and minimizing friction.
PowerBand mid-foot arch supports the foot and secures the shape and fit where the foot needs it most.
Vented mesh toe channel helps to keep things light and airy within the shoe.
Targeted textured zone under forefoot reduces slip.
7" cuff height (size Medium)