[3-in-1 Cleaning Brush] U-shaped brush: Matches the cup mouth to clean stubborn stains around the cup mouth. Gap brush: Cleans the narrow groove on the inner lid. Corner brush: Removes dirt in the corner grooves of the container. High-quality material: These portable cleaning brushes are made of heat-resistant polypropylene plastic. Strong and durable, washable and safe, not easy to break, can withstand 80 degrees Celsius, and can serve you for a long time. Intimate design: Replaceable by rotating 180, small and fast, easy to replace, with hanging holes, can be hung when not in use, quick drying, convenient storage. Easy and safe to clean: These 3-in-1 miniature multifunctional cleaning brushes can help you clean the nooks and crannies of bottle caps, wine glass lids, pacifiers, vacuum cups, etc., without damaging your bottles, and give you a wonderful experience in use. WIDE APPLICATIONS: Applicable to all types of cups and bottles, such as water cups, glasses, baby bottles, sports cups, wine glasses, tea cups, mugs, etc. Can also be used on jugs, jug lids, plates, pacifiers and more.