The SOLE Dean Karnazes Signature Edition Footbeds promise not to run off in the middle of the night. They also promise to absorb shock, support your arches, and improve your alignment so you too can run 350 miles in 81 hours, tackle 50 marathons in 50 days, or finish a 199 mile relay race by yourself. These lightweight, heat moldable insoles conform to your unique feet and feature 1. 6 millimeters of SOLE's Softec cushioning for comfort. One dollar for each pair sold goes to Karnazes' charity of choice, Karnokids. org. Ideal for medium volume shoes such as running shoes and cross trainers.