So feet!  So good!
I’ve treated many rock and other types of pumice & these are the best. They shed material a little when being used but they exfoliate so well!  No need to scrub hard even on tough feet. In fact you can over scrub an feel a little raw. That’s how good they are. They get the job done!  Need repacking after a few months as they wear down but totally great purchase.
Rating: 5 stars