Bottle Cleaning Brush

✅  Since the tip of the sponge is an ultra-fine fiber, you can scrape off scale and brown stains just by rubbing it with water.
✅  A cup-washing brush that can be folded or stretched.
✅  Easy-to-grip rubber grip.
✅  The handle type makes it difficult for dirt to come into direct contact with your hands, which helps prevent rough hands.
✅  As it is a foldable type, it can be stored compactly.
✅  Compatible with tumblers, cold water bottles, cups, and 350-800 ml stainless steel bottles with a bottle diameter of 4 cm or more.