12oz stemless wine tumbler lids 2packs for sivaphe double-wall stainless steel travel coffee mug 350ml sivaphe <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.