"One for all, everything in one." The modular system includes reusable and durable protective covers, interchangeable paper inserts, and various colored elastic bands for holding and closing. The combinable modules allow the notebook to effortlessly adapt to all the challenges of everyday life, making it as unique as its users. The choice between different covers and various line patterns and paper inserts ensures individuality in the lecture hall, at school, at home, or in the office, while also being environmentally friendly. The different covers can be reused and easily filled with new paper inserts.