Sofsole neutral arch insoles fit mens uk size 10 115 description the sof sole fit series features three distinct insoles with specific arch heights and tuned highrebound foam this combination allows them to work in conjunction with your foot type helping to promote the natural biomechanics of your unique stride by doing so fit insoles improve footwear fit performance and comfort the fit neutral arch insole features 60 durometer foam in heelarch 40 durometer foam in forefoo