Flip straw lid replacement for Stanley-compatible tumblers - 20/30oz spill-proof cover Features:It's shatter-resistant, dishwasher-safe, and completely free of BPA.Materials: Made with Plastic which can use in the dishwasher, It's a safe material and non of BPA, and the lid can be in-touch with the drinks directly.Professional Design: The opening designed to resist splashes with a-seal that holds the reusable straw in place. They are so easy and fast to clean.Leak-Proof: Our replacement flip lid is designed to prevent liquid leaks. Once securely fastened, it ensures leak-proof performance, providing you with peace-of mind during both use and storage of the tumblers worry about liquid splashes again.Practical Function: These tumblers replacement lids can hold water, juices, milk, tea or other beverages together with stainless steel tumblers, you can use them to cover your mugs to prevent dust from entering the mugs and enjoy delicious drinksNotice:1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurement Size: 8.7x8.2x4.7cmMaterial: Plastic