This cup and water bottle cleaning brush makes it easy to clean reusable cups and water bottles quickly and efficiently. The soft silicone bristles gently yet thoroughly remove stuck-on stains and residues from the interior surfaces of cups, mugs, and water bottles without scratching Its compact size and extended bristle head allow it to reach into even the most difficult areas, like corners and along narrow spouts. The brush is non-abrasive on glass, plastic, and stainless steel surfaces. Its ergonomic handle provides a comfortable grip for easy cleaning