The two-layer structure is the perfect combination of the durable nylon with good dirt-removing function, and the sponge with very good foaming performance, this bottle cleaner can quickly remove dirt. It can be hung to store, which can dry quickly and not easy to breed bacteria. The handle is extendable according to the depth and the length of the cup or bottle, which can easily clean the stains and dirt all around, it is definitely an indispensable tool for cleaning various types of cups and bottles.