Question about Beurer FM 90

Hello, I bought it for a friend who was disappointed because it wasn't strong enough for her (bought at Mednat and tried before) according to mine. I suggest you try it before you buy it... one person's happiness is another person's misfortune...

You can carefully remove the fabric parts and clean them by hand. It says something like this in the operating instructions.
But you can save yourself the effort by always slipping in with clean feet or socks ;-)