SOLESTAR KONTROL cycling insoles are designed for the performance cyclist. The unique fiberglass construction provides a strong and stable platform, offering superb power transfer, comfort and injury prevention. Your feet are supported in a position that provides greater stability, comfort, and power transfer when pedaling, as well as a reduced risk of injury. - Lightweight and super strong fiberglass core for support - Developed with pro cyclists to improve power transfer and efficiency - A strong foot position improves comfort and reduces injury risk Benefits - Works with any foot type, e.g. flat, splay or hollow feet - Avoid injuries and increase athletic performance, e.g. Road, MTB and XC - Relieve and prevent pain, e.g. heel spur, hallux, but also knee and back pain - Compensate leg position, e.g. bow legs or knock-knees, and leg length differences About Solestar - Designed and manufactured in Germany, featuring a unique fiberglass core. - SOLESTAR cycling insoles are special both in their design and manufacture. They work better and last longer than many other insoles on the market. - The unique advantage of SOLESTAR cycling insoles is that they hold the foot in the Optimal Neutral Position. This allows to transmit power in the most effective way.