Versatile Compatibility: This leak-proof Stanley lid is specifically designed for the Stanley 40 oz tumbler, providing versatility and convenience for Stanley enthusiasts Leak-Proof & Spill-Resistant: Featuring a secure flip straw design, this Stanley flip straw lid ensures your drink stays contained, making it ideal for both on-the-go and home use. Say goodbye to spills and leaks Durable & Reusable Materials: Crafted from high-quality, food-grade plastic, our Stanley replacement leak-proof lid is built to last. These Stanley cup tops are perfect for everyday use Enhanced Drinking Experience: The included long, sturdy straws with this Stanley flip top provide smooth and comfortable sipping, enhancing your overall drinking experience with your Stanley tumbler cups. Ideal for iced coffee, smoothies, and more Comprehensive Set: This complete set includes 2 durable replacement lids and 2 sturdy reusable straws. Whether you're traveling, working out, or enjoying the outdoors, it is the perfect accessory for many occasions 1