Perfect Fit for 40 oz: This 40oz tumbler flip straw pro lid is the ideal solution for preventing leaks in your 40 oz Stanley tumblers, including the Stanley Quencher ProTour and Stanley Quencher H2.0. Specifically designed for Stanley tumblers, this lid ensures a secure fit and effective spill-proof protection. Leak-Proof & Dust-Proof Flip Lid: This 40 oz tumbler lid for Stanley is engineered to prevent leaks and spills when properly secured, offering reliable, mess-free hydration on the go. After 360 days of research and testing, we introduced the upgraded dust-proof design to help keep your drinking water clean and hygienic—even in outdoor or gym environments. Whether you're commuting, hiking, or using your tumbler as a workout companion, this lid delivers maximum protection and convenience. Easy to Clean & Removable: The 40 oz tumbler flip lid replacement for Stanley features a detachable design, making it simple to clean every corner inside and out. The lid and accessories can be disassembled manually without any tools, ensuring a thorough and easy cleaning experience with no dead angles. BPA-Free Materials: Made from high-quality, BPA-free plastic, this leakproof lid is food-safe, odorless, and reusable. It's perfect for everyday use with your Stanley 40 oz tumbler, offering both durability and safety. Travel Set: Enhance your tumbler experience with this all-in-one package, which includes 2 replacement lids and 4 durable (7.8-inch) straws. Each straw is made from sturdy, reusable materials for long-lasting use—perfect for on-the-go use or sharing. The ideal choice for tumbler enthusiasts who value quality, convenience, and style! 40oz Flip Straw Lid for Stanley 64oz Flip Straw Lid for Stanley Stanley Quencher and ProTour Leak Proof top cap Replacement for 40oz Stanley No Spill cover Replacement for 40oz Stanley Dust-proof 40oz Flip Straw Lid for Stanley Reusable Removable lid Replacement for Stanley Cup 40oz Lid for Stanley Cup Accessories 64oz Lid for Stanley Cup Accessories