For UK 4 to UK 7 size feet. Eliminates pedal pressure under the ball of the foot These NEW Eco-friendly socks have been sustainably manufactured using our latest BCool Fibre. The FALKE Bike Pedal Pressure Free socks offer a strategically positioned pressure zone located under the ball of the foot, offering superior comfort over extended periods while cycling. These midcalf length cycling socks reduce pressure felt under the foot which helps promote blood flow and reduces swelling, pain and numbness.