BOTTLE CLEANING BRUSH - TWIN PACK Flexible straw brush for extra hygiene. Can clean up to 9 oz. and 12 0z. bottles. Comes with a small brush for thorough cleaning of the n i pple. For baby bottles and training cups. Random Color Feeder cleaning brush will ensure 100 % effective cleaning and sanitization of feeders. With its ideal ergonomic design makes it durable and easy to use. It gives you smooth cleaning without scratching your bottle and n i p p l e .