Get soft beautiful feet effortlessly whenever and wherever with Scholl Wet And Dry Gadget Refill! Velvet SmoothTM Wet & Dry roller head is specifically designed to be used dry or in the bath or shower. Scholl recommends that you only use these replacement Roller Heads with Scholl Velvet Smooth Wet & Dry Rechargeable Foot File. Please note this product is a refill for the Scholl Wet And Dry Gadget.