At Predator, we started on our custom insole because of a problem in our fit lab. We noticed that no matter what we did, many people still experienced side-to-side movement in their knees while on the bike. After countless hours we observed that many times it was a compression in the arch of the foot causing that knee movement. So we began to look for insoles and found that almost 95% of what's out there does virtually nothing to address this problem. Most of them are too soft and simply compress almost flat under load. So we began testing the most popular brands to see if they had thought of something we hadn't. Out of all the brands and models that we tested, nothing solved the problem. There was only one solution left; we set out to make our own custom insoles. Predator Cycling is excited to announce that we are ready to take orders for our new carbon fiber custom insoles! They are perfect for large and/or powerful riders looking to add stiffness to their shoes—or for any rider seeking a more precise fit. Manufactured using monocoque (one-piece) technology, our custom carbon insoles are built with reinforced high-modulus carbon fiber, and weigh just 30 to 40 grams depending on size. They have also shown modest increases in power for certain riders on our ergometer. Each pair of insoles are built completely custom for the rider. We've consulted with some of the nations leading podiatrists and learned the secrets of making a perfect foot casting (HINT: It isn't by using a foam box, despite what other companies may tell you). To set up your appointment for your custom casting, call us at (323) 418-2726. We are also offering a 10-year "No Questions Asked" warranty against breakage and defects on the first ten sets that we sell.