The cover of the practical workbook is made of high-quality silicone material. It is soft and durable, and can well protect the inner pages. The notebook paper is safe, odorless ,A5 notebook with spiral 360 degree rotating ,you can free replace new inner page ,with 80 sheets/160 pages , good notebook for diary,planner , working , draft ,drawing. The use of high-quality environmental protection silicone raw materials, safety, environmental protection, health, no odor.Push pop bubble Fidget Notebook Features a Straightforward Design with a Soft Surface Full of Poppable Bubbles, Providing Instant Gratification and Ease of Use for Small Kids,Individuals with Learning Disabilities, Elders, and Anyone Else. The colorful notebook with pleasant popping sound is a perfect gift for your child.