Product Contents: You will receive 21 sticky notes with twelve writable labels, a total of 252 writable labels. Rich colors and sufficient quantity to meet your needs for using and replacing Product material: This writable label is made of selected PET, thickened material, safe and environmentally friendly, smooth writing, tearproof and not easy to wear, with strong adhesive ability, not easy to fall off, strong and durable, lightweight and easy to carry , can be used for a long time Using small methods: Each write-on label is pre-cut and comes with self-adhesive stickers. You just need to tear it up and stick it where you want to use it. or it can be pasted on both sides of the page. It is foldable and you can easily remove it without leaving traces, which is very convenient and practical. Intimate design: The center of each classification label adopts half-folded dotted line, foldable design, it can easily insert and mark important information, write smoothly and clearly, easy to remove without leaving traces. 'application: Pencils, fountain pens, gel pens, oil pens, etc. can be written, suitable for notebooks, presentations, document classification, book organization, diaries, schedules and schedules, etc. They can be used in a variety of environments such as offices, schools, apartments, libraries, etc. You can summarize your plans more systematically and conveniently