The goal of this design is to provide students with a durable decompression pen. With the elements of straight line, the design of the whole pen is presented in the simplest way, and the simple and replaceable pen clip decorates the whole pen. There is an extended ink visible window at the pen holder, and four big to small dots protrusion are arranged equidistant on the side, which can reduce the pressure when pressing and rubbing with the finger. In use, as the ink drops, the corresponding dot gradually becomes smaller, which makes the resonance between users and products.