Ergonomic layout can make it straightforward to handle and use, the volcanic pumice stone fits simply in your hand. The loops of cord allow you to hold the stones to dry; an important A part of caring for the pumice stones. The largest volcanic eruptions can eject numerous cubic kilometers https://edenproductsltd.co.uk/2025/04/17/the-history-of-pumice-stone-from-ancient-civilisations-to-modern-day-uses/