doopootoo drinkware spill and splash resistant tumbler lid for yeti rambler and rtic tumblers for 20 ounce tumbler 2 pack parts express features:<br> the sliding closure can open and close for direct sipping or for a straw.<br> come with a black silicone o-ring around the base, which helps cover the cup tightly.<br> designed with an air hole on top of slider according airflow ergonomics which helps reducing splashing.<br> <br> specifications:<br> color: crystal clear with a little blue <br> material: as plastic <br> product diameter: 3.55 inches <br> <br>