BEST WATER BOTTLE BRUSH SET: No bristles. Includes 1 Large Bottle Brush, 1 Small Bottle Brush, and 2 Straw Brushes.  NO RUST: This water bottle cleaning brush has no wires that bend or rust, instead being made of 100% Polyester.  100% NON SCRATCH: No scratching or food streaks. safe for baby bottles, fine crystal, stemware, plastic, and stainless steel.
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