Smooth feet from heel-to-toe. This non-absorbent glass foot buffer resists bacteria,so that it stays clean and hygienic. Use the rough side to target thick skin and calluses around the sole and heel. The smooth side can be used to buff and soften skin as a finishing touch. It can also be used to file toenails and is suitable for sensitive skin and nails. After use,it can be placed under sunlight or UV light for 2 hours to sterilize. The high-quality glass is made to last. FOOT FILE TARGETS CALLUSES: Smooth feet from heel-to-toe HIGH-QUALITY GLASS FOOT BUFFER: Our foot buffer is made to last,and removes calluses and buffs skin 2-in-1 BUFFS AND FILES: Use the rough side of our 2-in-1 foot buffer for thick skin and calluses. The smooth side buffs and softens skin as a finishing touch USE ON WET OR DRY SKIN : Our callus remover for feet can be used on wet or dry skin EASY-TO-USE AT HOME: Easy to use. Get gorgeous feet anytime at home.