Description - Straw cleaning brushes is the best cleaning tool for reusable straws. - This brushes are specially designed for baby straw cup straws and also great for baby weighted straw kit straws.  - Size : Set of 4 brushes. Two 7 3/4 inch, 7mm in diameter brushes and two 6 inch, 5mm in diameter brushes. - Any Straws : A great solution for cleaning your straws, especially good for baby straw cup straws and weighted kit straws. - Durable but soft nylon bristles in a spiral, a good contact with the straw wall - Top rack dishwasher safe - We recommend washing your brushes with soap and water before use. - Brushes should be dried well after each use and stored in a dry place. - BPA Free