Replacement stopper for Stanley. Compatible with Stanley classic models thermos, including Stanley Classic Vacuum Insulated Wide Mouth Bottle (1.1 QT, 2 QT). Suitable for use with water, mate, coffee, tea, and other beverages. Made from food-grade, BPA-free material meeting high quality standards. Includes silicone rings to prevent leaks and ensure a strong seal. Each stopper is tested for durability and performance, odor-free, and safe for everyday use. Leak-resistant lid design allows for secure placement in backpacks without spill concerns. Twist-and-pour function enables easy pouring without removing the stopper. Ideal for camping, work sites, RVs, and outdoor activities. Easy to clean; hand wash recommended. Not suitable for dishwasher or microwave use. Smooth, seamless design for convenient maintenance. Color as shown in picture. Material: plastic. Package includes: 1 x bottle stopper. Product images may vary slightly in color due to lighting and display differences. Size may vary by +/- 1-3 cm.