This brush is perfect for getting into coffee mugs, wine glasses, jars and bottles. Hang your brush, or store in a jar bristle side down, to keep water from pooling on the handle. Most bottle brushes are made of plastic and are not biodegradable. The handle is made from sustainable bamboo and this brush has rough, plant-based sisal fiber bristles. This one is plastic-free and compostable after removing wire under bristles first. Vegan.