Materials by MasterFit. We proudly use Masterfit products that are pedorthist-designed and made in the USA. After much research, I selected Masterfit products because of their innovative casting system which allows me to capture the desired shape I need when making a custom insert. It also allows me to communicate with the client while their feet are in the casting tray so that I can make modifications and listen to feedback. The insoles are made with high quality long lasting materials that are unique in design as well. I underwent extensive Masterfit training and am a Masterfit certified fitter.