Modular Brush / Brush

Problem: The edges of shoes are easier to be dirty than the surface, but we don't brush shoes everyday. Usually, the size of brush is too big to clean the edge only. It will wet the surface of shoes. In this case, we often use toothbrush and shoes brush together to clean the shoes. This is inconvenient.
Solution: Modular brush is designed to solve the inconvenience when cleaning the shoes, user can replace each module freely. According to the different needs, adjust the number of module to clean different parts of shoes. The broken brush module can be replaced by the new one. We don't have to buy a new brush. The module is enough.