This wire handled brush is perfect for bottles, glasses, reusable drinking bottles, baby bottles and other hard to clean items. Produced from waste product from coconut production. The natural fibers have anti-bacterial properties and have a natural resistance to fungus and mold. Fats and oils do not congeal to this long lasting bottlebrush. Use then rinse clean, shake and hang dry. When dirty or in need of a refresh simply put it in the dishwasher.Simple Goods bottlebrush is ethically handmade in Sri Lanka and sourced from at trusted partner who works according to fair-trade principles.