●Leak-Resistant Solution: Say goodbye to unwanted tumbler spills. Our silicone spill stopper for Stanley cups offers a practical solution, significantly reducing the chances of messy leaks. ●Quality Assurance: Crafted from safe food-grade silicone, our spill stopper is both eco-friendly and durable. Its designed to withstand daily use without losing its shape and provides reliable heat resistance and sealing performance. ●Effortless Usage & Cleaning: Installing our spill stopper is hassle-free-simply place it on your tumbler lid and press gently. It fits snugly and securely and is easy to clean either by hand or in the dishwasher, making it a convenient addition to your tumbler accessories. ●Comprehensive Protection: This set includes straw cover caps, square spill stoppers, and round lid leak stoppers. The straw cover keeps your straw clean and spill-free. The square plug securely seals the straw, while the round plug ensures a smooth drinking experience. Enjoy a mess-free tumbler experience! ●Universal Compatibility: Our accessories are designed to Compatible with Stanley 40/30 oz Quencher H2.0&1.0 Tumblers with Handles, providing versatility to meet your needs across different tumbler versions. Upgrade your tumbler cup confidently