Label Protectors - Mylar Folder Name Label Protectors. Label protectors are self adhesive clear mylar strips with a heavy weight backing that is scored for easy application. Clear mylar strips protect file folder edges and name labels from cracking, peeling and fading. If you tired of worn labels that fade or peel over time these label protectors are the answer. Just apply these protectors over the labels on your folder and protect them for years to come.