Toss in the wash with cold water. Air dry. Boom.
Disappointed
"I own several pairs of Rothy’s and these are, by far, my least favorite. I bought a half size smaller because of the heel strap. They still came off my feet frequently. They are also not comfortable. The style of the shoe does not allow for any cushioning or support. I bought them to wear for a special occasion and I will probably not wear them again."