Size:30oz <br> Color:Clear<br> Features: The closure can open and close for direct sipping or for a straw. Come with a black silicone o-ring around the base, which helps cover the cup tightly. Designed with an air hole on top of slider according airflow ergonomics which helps reducing splashing.<br><br><br> Note:<br> 1. Our lid can prevent liquid from splashing, but it cannot guarantee 100% leak-proof liquid in the cup. The liquid in the cup is very full, and the cup is tilted 90°, when placed sideways, a small amount of liquid in the cup will leak out from the air hole on the top of the slider. (Since our design is to help reduce splashing, we have designed an air hole on the top of the slider to achieve this purpose through air ergonomics.) So if you buy this lid, please do not put the cup filled with liquid Place it sideways. So as not to cause you some trouble. However, if the liquid in the cup is not full and the tilt angle is lower than 45°, the liquid will not leak out.<br><br> 2. If the inner diameter of your cup is 9.1cm/3.58 inch, it is just right to use our lid, and the lid will fit tightly on the mouth of the cup. If your size is different from ours, it is not recommended that you buy it. Hope you can buy a suitable cover for you.<br><br>