- Compatible with Stanley 40oz Tumbler with Handle: This silicone flip straw lid is designed to fit perfectly with your Stanley 40oz tumbler, ensuring a secure and reliable fit. - Safe and Durable Material: Made from food-grade silicone, this lid is non-toxic, BPA-free, and odor-free. It's reusable for daily use, making it an eco-friendly choice. - Leak-Proof Design: Our flip lid prevents liquid leaks, allowing for hassle-free sipping while you're on the go. The leak-proof seal ensures no spills, keeping your bag or car clean. - Insulated Performance: This lid helps maintain your beverage's temperature, keeping drinks cold or hot for hours, ideal for those long hikes, commutes, or road trips. - Easy to Clean: The flip straw lid is dishwasher safe and features a detachable straw for effortless cleaning, ensuring your drinking accessories remain hygienic. Use Scenarios: - Perfect for outdoor adventures: Enjoy cold water or hot coffee on hikes without the worry of spills. - Convenient for daily commutes: Sip your favorite beverage in the car without any risks of leaking. - Great for workouts: Stay hydrated during the gym or yoga sessions without having to pause for spills. Upgrade your Stanley 40oz tumbler experience with this practical and stylish silicone flip straw lid, designed for everyday convenience and performance.