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. Reduce Noise: Helps minimize noise from metal contact in quiet environments, providing a more discreet drinking experience. 3. Enhanced Protection: The silicone sleeve cover helps protect the bottom of your tumbler from dents, scratches, and slipping. It also helps reduce noise during use. 4. High-Quality Material: Made from soft, flexible silicone, these protective boots are BPA-free, odor-free, reusable, durable, and safe for everyday use. 5. Secure Fit: The water bottle bottom sleeve is precisely shaped to fit the bottom of compatible tumblers, ensuring a snug fit that stays in place. Specification: Material: Silicone Color: Multicolor Size: 7.5 x 4.5 cm Weight: 35g Package Included: 1 x Silicone Protector Boot