3:Sixteen Aero Calf Sleeve™ - Black/White (pair) Size:S Active 4D sonar array

Active 4D sonar array

Everyday Comfort

designed to give you razor sharp vision in different light conditions

Flat moulded 100% silicone

Made with 30% recycled materials to reduce environmental impact

3:Sixteen Aero Calf Sleeve™ - Black/White (pair) Size:S Active 4D sonar arraySave up to 12 Watts Athletes can now benefit from the watt saving technology found in our record breaking Aero Bridge Undervest. Compared to aero socks, the extra calf coverage gives even greater aerodynamic and time savings. Saving up to 12 watts, these Calf Sleeves are the best investment on the market, with the highest watt aero gain. Developed Alongside the World's Greatest Utilising the same technology as our Aero Bridge Undervest, the 3: Sixteen