Another happy customer wrote: "Wow, wow, wow, these shoes are amazing. They are slip-resistant. I tried to get them to slide on the floor at work and they would not budge. My feet were so happy ...

At UPMC Altoona six years ago, orthopedic surgeon Greg Meloy had to amputate the foot of a homeless man who had contracted frostbite from sleeping outside without shoes. “It hits you at your core,” ...