The Earth Therapeutics Nano Glass Foot File is a precision foot care tool designed to smooth rough, dry skin and help reduce tough calluses at home, ideal for anyone who wants effective, low-effort foot care with comfortable reach. It combines advanced nano glass technology with an ergonomic design for practical, everyday use. The filing surface is made of finely granular nano glass that is tempered and laser-etched to create a consistent textured surface. This construction is described as shatterproof and is engineered to swiftly slough away hardened skin while leaving a smoother finish than coarse metal rasps or pumice-style tools. The nano glass surface is hypoallergenic and designed to be safe and effective when used as directed. A contoured, ergonomic, design helps you maintain a secure grip and comfortably reach heels, balls of the feet, and other hard-to-access areas. The overall size is approximately 2.9" x 5.5" x 1.5", providing ample filing area for efficient coverage. You can use this foot file on wet or dry skin, making it suitable for use in the shower, bath, or on clean, dry feet. The file surface is nano glass and the base is plastic. Packaging is made with 30% post-consumer recycled PET. Warnings: Do not use if you have diabetes, neuropathy, or any circulation disorder. Do not use on foot warts. Do not overuse. Keep away from children.