<b>Warm Design: </b><br> <br>1. Flipping closure locks in both air and liquid, Perfect fit YETI Tumbler, RTIC and other brand tumblers <br>2.Open/Close Sliding Closure Design, Convenient for removing lid <br>3. Designed with an air hole on top of slider according airflow ergonomics, keep same air pressure and straw friendly <br>4. Allows for direct sipping or using a straw <br>5. Splash resistant silicone O-ring, and it helps cover the tumbler more tightly. <br><br> <b>Specifications:</b> <br> <br>Color: Transparent <br>Material: AS plastic <br>Product Diameter: 3.54" <br>Package includes: <br>1* Spill proof and splash resistant tumbler lid <br>1* normal 12OZ Insulated tumbler <br><br> <b>Notice: </b><br> <br>1.It is easy to clean and dishwasher safe, but avoid using in microwave. <br>2.The air hole is designed to keep a same air pressure inside and outside the tumbler, making it convenient for you to drink water. <br>3.This lid will help with accidental tips and spills but not guarantee no leaks if full hot water.