Toss in the wash with cold water. Air dry. Boom.
Pretty great, but not as good as my other Rothy’s
"I bought a half size up per other reviewers. I am glad I did as the length is perfect. However, overall they are not as comfortable as my other Rothy styles in terms of the support or heel fit (the heel is a bit wide). They stay on my feet because of the strap but slip a bit in the heel."