New material: :Our Nano Glass Foot File made of nanocrystalline material, which is very suitable for exfoliating dead skin.Nearly 10,000 grinding points work simultaneously on the soles of the feet.It can easily remove dead skin, calluses, etc., and will leave your heel soft and smooth in just 2-3 minutes.Safer than stainless rasp: : Our nanoparticles have a uniform, dense surface and are durable.They don't hurt the skin, nor do they cause pain from exertion.The grinding surface of stainless steel foot grinding is serrated, and it is easy to scratch the skin when using it.It is not suitable for use on the soles of the feet and can cause bleeding.Stainless steel is easy to rust after long time cleaning.Easy to control: : We Nano glass foot file use epoxy resin technology on the back, so that you can hold a better feeling.It's easy to control.When you rub your feet, it's like removing dead skin during a foot massage.It's gentle and won't hurt the skin on your feet.Thicken structure design, ensure long-term use is always integral, maintain the initial use effect.Recommended Usage: Soak your feet in warm water first to soften the dead skin, and then nano glass foot file dead skin , which will peel off immediately. After using, apply moisturizer to keep your feet wet.Day after day, your feet will become as delicate as a child's skin.Waterproof and washable: : Do not worry about cleaning after use, this nano glass foot file waterproof, rust and fouling effect, only need to clean after use, you can take on a new look