Replacement stopper for ThermoSs. Compatible with classic ThermoSs models and Classic Vacuum Insulated Wide Mouth Bottles (1.1 QT, 2 QT), suitable for water, coffee, tea, and other beverages. High quality: Made from food-grade plastic material meeting high safety standards. Includes silicone rings to prevent leaks, ensuring a strong seal. Each stopper is tested for durability and reliability, odor-free and safe for daily use. Leak-resistant lid: Designed specifically for stainless steel vacuum bottles, allowing secure transport in backpacks or travel bags without spill concerns. Twist-and-pour function enables easy pouring without fully removing the stopper. Ideal for camping, hiking, RV trips, and outdoor use. Easy to clean: The smooth, seamless design allows for quick hand washing with water. Not recommended for dishwasher or microwave use. Reusable and simple to replace. Color: As shown Material: Plastic Package includes: 1 x bottle stopper Note: Light reflection and display differences may cause slight variations in color. Measurement tolerance: +/- 1-3 cm.