Caution! The size of the lid has a top diameter of 9.1 inches and a bottom diameter of 3.74 inches, please understand that there may be an error of about 0.02 due to the different ways of measurement. So this lid simply can only replace the same size 30 ounce lid. In order to avoid you buy the wrong size lid, please measure the size of your original lid to see if it is the same size as the one we are selling before you buy it. Thanks! Measurement You can refer to our video the way we measure SPILL PROOF: Our set is a combination of 2 spill-proof lids. This lid of ours is leak-proof and spill-proof design. It is a great companion to the cup for those who drive. When your thermos is filled with your favorite drink and covered with our lid, placed in your car where you put the water cup, it will cover the cup very steadily and will not let the liquid spill. I'm sure those who drive will love it. UNIQUE DESIGN：Switch sliding cover design, easy to use. The hole on the top of the cup can be used directly or with a straw. The sliding cover design prevents you from touching your nose while drinking water. The color of our lid is very beautiful, you can enjoy the lid in a different color from others. Our replacement cup lid features double seal technology to support the temperature of your drink, whether hot or cold, you can enjoy your favorite beverage. In addition, it is very easy and convenient to clean, hand wash, or dishwasher safe, economical. A set of 2, you can use one for yourself, the other can be given to your loved ones, or your dear family and friends, or you can keep it as a spare. But I think it's good for friends who drive, because it has a splash-proof function that keeps the liquid inside the water cup in the car from splashing out. So if you usually have a lot of driving, give it to yourself, or to your friends who drive around . SERVIVES: If you have any other questions about our products, you can contact us by email, we do our best to serve you, thank you for your attention. Caution! The size of the lid has a top diameter of 9.1 inches and a bottom diameter of 3.74 inches, please understand that there may be an error of about 0.02 due to the different ways of measurement. So this lid simply can only replace the same size 30 ounce lid. In order to avoid you buy the wrong size lid, please measure the size of your original lid to see if it is the same size as the one we are selling before you buy it. Thanks! Measurement You can refer to our video the way we measure.

The LIDS are not universal. Please check whether the size of your old lid is the same as the size of the LIDS we sell before purchasing to avoid buying an unsuitable one.

Not all 30oz LIDS are the same. Please check the size carefully and purchase with caution!