About this item Safe Material: The silicone straw cleaner brushes 4 pack made from food grade silicone and stainless steel for ultimate safety Use With Any Reusable Style Straw: The straw cleaner brush set includes 2 brushes (0.37 inch & 0.25 inch diameters), great for metal, glass, bamboo, plastic or silicone straws Reduce Build Up: When you don’t properly clean your reusable straws, gunk and grime build up; our silicone straw brush clear all contents from your straw No More Scratches: When you use a bristle cleaner to clean your silicone, glass, metal, or plastic straws, you are creating microscopic cuts that increase leaching and gunk build up; our silicone straw brushes do not scratch the surface of your reusable straws Long Lasting & Reusable: High-quality silicone straw brushes don’t shed bristles and last a long time, avoiding the need for frequent replacements Easily Cleaning & Dry Up: Easily be cleaned with water or in the dishwasher; with hanging loops on each brush, drying is a breeze, making this a convenient cleaning option