- For touchably soft feet. Premium quality German-made ceramic stone removes calluses and smooths skin like no other. Not just for sandal season, feet will look great and feel super silky year round. Bestselling two-sided design. Essential to keep feet in tip-top flip-flop shape and calluses at bay through every season. Skillfully crafted in durable German-made ceramic with long handle for comfort and control. Stone features a coarse side for reducing calluses and fine side for smoothing skin. Soak feet to prep and help soften hard skin. While skin is still soft and damp, use the course side to exfoliate especially rough or callused spots. Use the opposite side to smooth bottoms of feet and around toes. To clean callus stone, use soap and water. Air dry. No. 3423-CP