Upgrade your 40oz tumbler with this premium flip straw lid replacement, designed for maximum convenience and performance. Made from BPA-free Tritan and food-grade silicone, this lid offers a durable, leak-proof, and spill-resistant solution for everyday use. Its triple-layer silicone seal ensures no spills, whether you're on the go, at the gym, or relaxing at home. This lid features an adjustable spout, making it ideal for both left- and right-handed users. Snap it on easily without twisting, and enjoy seamless hydration. The included 9.5-inch reusable silicone straw reaches the bottom of your tumbler for effortless sipping. Perfectly compatible for Stanley Quencher tumblers 40oz, this lid combines style and practicality. Whether you’re replacing a worn-out lid or enhancing your tumbler, it’s the ultimate accessory for Stanley users and a must-have for all your hydration needs.