Compatible with: Our spill proof stoppers have precise design and are compatible with Stanley Cup 2.0 40/30oz. You can use them with confidence and without worry about leaking. Please note that our product is not sponsored or endorsed by, or affiliated with the brand it fits, including Stanley. Improved Spill Protection: Our spill stopper is designed to reduce water spills and let you say goodbye to water leakage of Stanley cup of 30/40oz. Easy to Install: It's very easy to install our spill stopper, just place it in your cup and press down firmly. Premium Material: Made of quality silicone, providing you with premium drinking experience. Perfectly Fit: Our spill stopper set is specially designed for Stanley 30/40oz tumblers, and it stops dust and debris entering your drinks, keeping your drink and cup clean all the time. Specification:
Color: cream yellow
Material: silicone
Product Size: as shown in the detail picture

Package details:
2 x round spill proof stopper
2 x square spill proof stopper
2 x straw cover

Note:
Due to manual measurement, the size and weight may have a certain error.
Due to the difference between different monitors, there may be a slight color difference existed.