The mouth of the cup is very small and can be inserted into it to clean; the nylon brush can effectively clean the dead corners that are difficult to reach; the configuration design can clean the grooves.
If you want to use it on both sides, you can rotate it and use it. Double-sided rotation for replacement use, with grooves inside, not easy to get dirty and damaged.
Suitable for all kinds of cups and bottles, Insulation cups, glass cups, wine glasses, teacups, beakers, etc.