Age:more than the 6 years old,more than the 8 years old 1,Easy to Classify: Different colors for remembering different things easy to classify, suitable for message notes, book tags. 2,Easy to Use: With adhesive design, the label can be easily attached to a smooth for ease of use. 3,Quickly Find Content: Mark important pages in your , reports, or books help you quickly find what you're looking for. 4,Daily Use: You can on the refrigerator to remind you of the date of the food. You can on the bed to motivate yourself to get the goal done every day. You can on your calendar to remind yourself of important days. 5,Safety and Health: Environmentally friendly paper is non-, has no odor, and can be repeatedly pasted. Product Name: Sticky Note Innovative Self Adhesive Index Label Office School Supplies for Message Notes Book Tag 100 Pieces Function: tag; note colour:random Random colors cannot be Material:paper size:6.5*1.8cm Package Contents: 1* notes Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.