[Journaling and Planning Made Easy]: These erasable gel pens are perfect for planners, editors, and teachers. I use these a lot when making lesson plans that often change. I use them for notes and marking important things in my notebook and calendar. Vibrant mixed colors make my notebook and journaling come alive, it's very interesting. [Keep My Paper or Books Clean and Tidy]: The special ink disappears through friction heat by the \"rubber ink eraser\". The softness of the rubber ink eraser is moderate, neither damages my paper nor shreds, falls out or wears down quickly. I often do some text editing and drawings when I have inspiration. If I want to make a change, I can just erase what I have and continue, and I don't have a page full of doodles when I'm done. Erasing the pen with an eraser saves me so much time and paper. [Erasable Pens for Crosswords]: We play Sudoku crosswords with kids on the weekends and I prefer these erasable ink pens to pencils, because it's easier to see what I've written than if I use a pencil. The lighter color of the pencil always makes it difficult for me to see, and the marks and eraser confetti after erasing also irritate me. [Do Not Use on Important Documents]: If the temperature exceeds 50°C/120°F, the ink and writing content will begin to disappear. Do not leave pens and notebooks in the car or exposed to the sun. Do not use these pens for exams, legal, official documents, envelopes, or signatures. (Storing the pen and paper in the refrigerator for a while will make the words recover. It can also be a magic if we want to write a private shared letter or draw.) [Well-Prepared and Practical Gifts]: 8 erasable gel pens, 0.5 mm medium tip, smooth writing and quick ink drying. Non-toxic ink, acid-free, bleed-free, heat erasable. The refill can be replaced. Perfect for note-taking, homework, editing, or handling work. It is a good ideal gift for children, students, teachers, colleagues, and office mates! If you are not satisfied with our products or have any problems, please contact us at any time.