ORIGINAL PATENTED TECHNOLOGY Handmade by adult artisans in Czech Republic RECOMMENDED BY PROFESSIONALS FOR HEALTHY NAILS Files made by gluing harsh abrasives to the surface rip tear and damage nails Our chemically etched glass seals keratin layers creating strong healthy fingernails and toenails it never wears off Guaranteed for life BABY SOFT FEET Our gentle pedicure bar removes dead skin heel callouses while leaving healthy living skin intact HEY ITS GLASS Friendly reminder its made of glass Our files are 3mm thick unlike 2mm alternatives to protect against breakage Treat it like you would a favorite wine glass this file can last a lifetime