Features: 1. Compatibility: The protective silicone boot is specially designed for 40oz glass with a handle, Quencher H2.0, and 20oz, 30oz tumblers. It helps extend the service life of your tumbler. 2. No More Embarrassment: Avoid unwanted noise in quiet environments. The silicone protective sleeve helps reduce noise from metal contact. 3. Better Protection: This bottom silicone sleeve effectively protects the bottle base from dents, scratches, and skid resistance, while reducing noise and helping prolong the tumbler's life. 4. High-Quality Material: Made from soft and flexible silicone, the protective boot is BPA-free, odor-free, reusable, durable, and safe for daily use. 5. Secure Fit: The water bottle bottom sleeve is precisely shaped to fit the bottom of the tumbler securely and stays in place. Specifications: Material: Silicone Color: Multicolor Size: 7.5 x 4.5 cm Weight: 35 g Package Includes: 1 x Silicone Protector Boot