On Running Cloudmonster Void - White - Size UK 9

The Cloudmonster Void is primarily designed for lifestyle and everyday wear, offering exceptional comfort and stability for walking and casual activities. While they incorporate performance-inspired technology, they are not specifically optimized for intensive or high-mileage running.

On Running shoes generally fit true to size. We recommend referring to the official On Running size guide, usually available on product pages. If you're between sizes, consider your typical preference for fit.

The Speedboard unit is an integrated plate within the midsole, engineered to provide stability and a smooth rolling motion from heel to toe. It works with the cushioning to deliver a responsive and comfortable feel.

No, machine washing is generally not recommended. It can damage the shoe's structural integrity, adhesives, and materials. Please follow the manual cleaning instructions provided in the 'Care' section.

The haptic-inspired mesh upper provides excellent breathability but is not waterproof. While they can handle light splashes, we advise avoiding heavy rain or wet conditions to maintain their condition and prevent your feet from getting wet.

For optimal comfort and breathability, we recommend wearing athletic or performance socks made from moisture-wicking materials. This helps manage sweat and enhances the overall comfort provided by the shoe's design.

Check your lacing. Ensure laces are evenly tensioned from bottom to top. If still uncomfortable, verify your size against On Running's size chart. Sometimes, trying different sock thicknesses can help.

This can sometimes be caused by friction between the insole and the shoe's base, or moisture. Try removing the insoles, cleaning them and the shoe's interior, and sprinkling a small amount of talcum powder inside before reinserting. Ensure shoes are completely dry.

Gently clean the upper with a soft brush or cloth using a mild soap and lukewarm water solution. Avoid harsh scrubbing or abrasive cleaners. Allow to air dry completely away from direct heat.

While the shoes feature perforated tongues for breathability, consider wearing moisture-wicking socks. Ensure you've followed care instructions to keep the mesh clean and unobstructed for optimal airflow.