High-tech nano-materials: Made with V3.0 nano-technology materials, our foot file uses a high-precision nano-glass design process that adapts precisely to each individual's skin and effectively removes dead and hard skin. In just 1 to 3 minutes, you can keep your feet smooth for up to a month. The glass edge is polished, not sharp, making it safer and preventing injury.2-in-1 Callus Remover: Our nano callus remover can be used on both wet and dry skin. It will be your best choice for removing calluses. Give yourself a professional foot care routine at home. This excellent product will leave your feet smoother, softer, and more beautiful without going to a pedicure salon, saving you time and money. You deserve it.Save money and more safety: instead of the old, dull version, our improved Nano callus remover is designed with a durable micro-grinding surface that ensures completely safe removal of calluses, cracked, hard and dead skin on the foot, no need to recharge the battery, cheaper and simpler than the electric file, safer than the foot scraper that requires Lady B, no need to hurt yourself and buy extra replacement blades.Ergonomic and portable design: Ergonomic, luxurious, and stylish, the streamlined shape is easier to hold and use. At the same time, our nano foot file is lightweight and portable, so you can easily carry it and perform your foot care anywhere. 【Easy to Use】: This professional callus remover is very easy to use. It can be used both wet and dry, and it's very easy to clean. Simply rinse it under running water after your foot care routine and then dry it. It comes in beautiful packaging, making it a wonderful gift for yourself, your family, and friends. Buy now and you'll get smooth feet and a great mood.