ThermoSs Replacement Stopper for Classic Vacuum-Insulated Wide-Mouth Bottles (1.1 QT, 2 QT). Compatible with classic ThermoSs models. Suitable for water, mate, coffee, tea, and other beverages. High Quality: Made from food-grade plastic, meeting strict quality standards. Features silicone sealing rings to prevent leaks. Each stopper is tested for durability, secure fit, and safety—odorless and safe for daily use. Leak-Resistant Design: Engineered for stainless steel vacuum bottles. Secure twist-and-pour functionality allows controlled dispensing without full removal. Ideal for use at home, in the office, at camp, or in an RV. Easy to Clean: Reusable and simple to clean by hand with water. Not dishwasher-safe. Do not microwave. Color: As shown in image. Material: Plastic. Package Includes: 1 × bottle stopper. Note: Colors may vary slightly due to screen settings and lighting. Measurement tolerance: ±1–3 cm.