Using the Spredi Spa sandals is a breeze. First, put them on your feet. If you're going to have a pedicure, twist the pedicure strap between your toes to separate them and get ready for a great pedicure. The sandals can be adjusted at the heel to fit your foot size. They're suitable for both women (size 6) and men (up to size 14). Remember that the white color might have slight variations. Since they're waterproof and disposable, you don't need to worry about cleaning them. Just use them and then throw them away after use. There's no special maintenance required for these sandals.