Cup brushes are very much needed household cleaning products in life, but they take up more space for small-sized kitchens. This cup brush redefines the form of cup brushes and adopts a telescopic structure to make the volume very small. At the same time of ensuring household use, Baoma can also use them when taking their babies out to brush milk bottles. The appearance adopts a rounded design form and a flat surface to make the original cleaning tools more delicate,