Toss in the wash with cold water. Air dry. Boom.
Tripping hazard
"The fabric stretches, and now the right shoe is loose in front and the toe catches frequently when I walk. I’ve almost tripped a couple of times. I like how adjustable it is in the back — I have it as tight as it will go. But that doesn’t help the fit in the front. I have wide feet, so extra width is usually a good thing, but not in this case."