Some of us have flat feet because of genetics (thanks, mom and dad) or because of an untreated injury. Regardless of why you have flat feet, we can all agree on one thing: having them is a real pain.

If you’ve ever winced with every step thanks to heel pain or plantar fasciitis, you’re not alone—and you don’t have to suffer in silence. My husband and I have both had plantar fasciitis. He’s ...