Ideal for Metal & Glass Straws – The 9mm silicone brush head is perfect for cleaning metal, glass, and other reusable straws, providing a thorough, residue-free clean. Durable & Flexible Silicone – Made from high-quality silicone, the brushes are gentle on your straws and bottles but tough on dirt, ensuring long-lasting performance without damage. Bendable Design for Easy Reach – The flexible design allows you to easily clean the entire length of your straws and narrow bottle lids, making it perfect for all types of reusable drinkware. Eco-Friendly & Reusable – Replace disposable straw cleaning tools with this sustainable, reusable brush that helps reduce waste while keeping your straws and bottles fresh and clean. Compact & Easy to Use – Lightweight and portable, the two pink brushes are easy to store, carry, and use at home or on the go, ensuring your straws and lids stay hygienic wherever you are.