About this item Perfect Leak-Proof Solution – Our meticulously designed leak-proof stoppers are the ideal accessory for your cup, ensuring a perfect fit for both the straw and cup. With their precise design, they effectively prevent water leakage, offering the perfect solution to your concerns about cup leaks. Compatible with Stanley Version 1.0 Cup Only – Please note that these leak-proof stoppers are specifically designed for compatibility with the Stanley Quencher Tumbler 1.0 in 40oz and 30oz sizes. They are not suitable for the 2.0 version or other cups. It’s important to double-check and ensure you are ordering the correct version of the cup for compatibility. Food-Grade Silicone Material – Our leak-proof stoppers are made from high-quality silicone material that is BPA-free, food-grade, and reusable. This ensures your safety and health while using the accessories. You can enjoy your beverages with confidence, knowing that the materials are safe for contact with food and drinks. Package Includes – The set includes a comprehensive range of accessories to enhance your cup’s functionality. It includes 2 Stanley straw covers, 2 square leak-proof stoppers, and 2 round leak-proof stoppers. These accessories work together to effectively prevent spills and keep dust out of your cup, providing a hassle-free drinking experience. Easy to Install and Clean – Our leak-proof stoppers are designed for convenience and practicality. They are compact, lightweight, and easy to install, making them perfect for outdoor activities or daily use. Cleaning is a breeze as well – you can either clean them by hand or place them in the dishwasher for added convenience and hygiene.