The Ergon IP3 Solestar on the trail
When slipping into my Five Tens fitted with the new insole, I immediately noticed the increased ankle support. My foot normally tends to pronate, meaning my ankle tends to tilt inward and the insoles immediately prevented this from happening. In addition, the insoles felt hard and stiff. This hardness should also improve power transfer.
It did take two longer rides to break the insoles in and get used to their stiffness. The permanent light pressure disappeared and my muscles got used to the new alignment in the neutral zero position provided by the insoles. The ribbed upper prevents the foot from sliding around inside the shoe, which feels great.