Sizing: Small – UK 5 Medium – UK 7 Large – UK 9 Extra Large – UK 11. "Improving a riders foot control is always an important part of our fit process. The Sidas 3FEET insoles are our go-to product for helping to stabilise riders feet. We just retail the high arch insoles as these work for 85% of fit clients. These insoles can completely transform how your shoe fits, I am yet to find anything close to the quality at a £35 price point. Supported feet = happy feet." Matt Hallam.