Based on the best selling Pedro? Callus Stone, this new ergonomic shape fits perfectly in the palm of your hand for exceptional comfort and maximum control. Expertly crafted in genuine German-made ceramic, our mighty mini-stone makes light work of banishing tough calluses, removing embedded dirt and gently exfoliating dry skin. Use wet or dry. Built-in colorful storage unit with ventilated cover is convenient and pack-able. Perfect for home and travel.