These items are made of paper material, and safe. You can use them easily. The bright colors look beautiful, you have a good mood, and you can also use the colors for category management. They have a smooth surface and you have a good experience of using it and can use it to improve our learning productivity. Features -Color:Multi -Material:Paper -Size:17.70X9.50X0.10cm/6.96X3.73X0.04in -The Index Tabs are well made and the bright colors on them do not fade easily, the vibrant colors make your information more eye-catching. -These flipped charts are lightweight, great for carrying and keeping, and the material allows for long term use. -They are small, easy to use, easy to carry to school or office, and used to keep the documentation neat and beautiful. -These stickers can help you quickly narrow down your content search and help you find what you need faster. -They can be used for or given as to friends and can be used in the office, school and home, for personal use. Package list: 6 x Sets of Paper Dividers