Adaptive snowboarder Mike Schultz is no ordinary Paralympian–and that’s not just because he won the gold in boardercross earlier this week or because he bore the flag for the United States during the Pyeongchang Games’ opening ceremony. He also designs and engineers his own prosthetics and has outfitted hundreds of other athletes and amputees, including 30 Paralympians at the 2018 Games. Schultz isn’t just competing in the Games–his designs are helping his teammates, too.