2 Pack 40 OZ Tumbler Flip Straw Lid Replacement Fit for Stanley Quencher，Spill Proof and Leak Resistant Tumbler Lids Compatible with Stanley Cup Traveler Accessories（sky blue）

High Portability:
It is highly portable and convenient for carrying, whether you put it in a bag, take it for sports, or let children use it.

Excellent Leak-Proof Performance:
This lid effectively prevents leaks, ensuring no water spills even when the cup is inverted or knocked over.

Specifically Designed for 40-Ounce Stanley Cups:
It is perfectly compatible with the 40-ounce Stanley H2.0 Quencher and 40-ounce Stanley ProTour, but not suitable for Stanley IceFlow.

Food-Grade Materials:
Made from BPA-free, food-grade plastic, it is odorless, reusable, environmentally friendly, and ensures your health and safety.

Check Compatibility: 
Ensure the lid matches for your Stanley cup model exactly. Some users report that the lid may not fit certain models well or may not seal properly.  

Avoid Rough Handling: 
Minimize shaking or inverting the cup during use to reduce the risk of leaks.  

Inspect the Gasket Regularly:
The gasket may shift or loosen during use. Always check that it is properly installed and snug before using.