Corkcicle Bottle Brush Hydration Belts & Water Bottles : The Corkcicle Bottle Brush helps you maintain a clean and fresh Corkcicle Tumbler or Canteen, no matter the size. Its scrubby nylon brush head really gets into the hard-to-reach areas of a bottle. Keep your favorite bottle squeaky clean with this convenient bottle brush. Features an extra long hangable metal hanger.