Size: 3.6 x 19 cm, this size is suitable for sticking on the spine of most wide folders, providing ample writing and marking space. Material features: Made of selected materials, good viscosity, not easy to fall off after sticking, can be fixed on the folder for a long time. Easy to use: self-adhesive design, just gently tear off the backing paper, you can stick it directly on the folder, the operation is simple and fast. Applicable scenarios: widely used in libraries, offices and homes, etc., convenient for classifying and marking various types of files. Function: It can clearly mark the category, subject and other information of the files in the folder, which is convenient for quick search and management of files.