Box contents: 4 double-sided foot files, 24 x 6 cm. They are suitable for your family when travelling and in daily life. (Please confirm the size before purchasing) Double-sided design: our callus file is double-sided, the thicker side can be used to remove calluses, and the smoother side can be used to smooth your feet, which meets your different usage requirements, a practical exfoliating tool for the skin that brings you a good user experience. High quality: Our callus file is made of high-quality materials and is durable, can be washed and used multiple times. Easy to use: Before using a foot file, soak the foot in warm water for a while to soften the skin, and dry it with a towel. Choose a suitable friction surface to remove dead skin or calluses. ApplicationEasy to remove calluses and dead skin, cracked skin on the feet, keep it smooth and soft. It can solve the problem of dead skin on your feet.