An excellent double-sided file on a sponge, designed for matting nails. Perfect for smoothing the nail before making a hybrid manicure. Smudge the nail, thus extending the durability of the manicure. There is a sponge inside the file, which will allow it to adapt to the natural roundness of the nail plate. Thanks to the use of the latest materials, the polisher is resistant to moisture, including disinfectants.