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Easy to open and close-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.
Excellent compatibility-the lid can replace 30 ounces (the inner diameter of the cup is about 3.72 in) insulated stainless steel cups of any material, but it is not suitable for RTIC flat-bottomed cups! In order to avoid you to buy an inappropriate size lid, before buying Please measure the inner diameter and outer diameter of the cup, and then please refer to our fourth and fifth pictures. These two pictures are taken by our actual measurement. And check the details of our description.
Splash-proof-The edge of the flat-bottomed cup lid is lined with a silicone gasket to prevent splashes and major spills when the cup is turned over. There is an air hole on the top of the slider, through the air ergonomics, which helps to reduce splashing. However, this cup lid cannot be guaranteed to be 100% leak-proof. Please check the two precautions described below before purchasing.
High-quality materials-made of high-quality raw materials, can be used for a long time, BPA-free, easy to clean, and can be cleaned in a dishwasher.
Quality Assurance-Buy our products, we will give quality assurance, if you have any questions or dissatisfaction with our products, you can contact us, we will do our best to serve you.

Product description

Our 30oz lid only fits 2017 version of the old YTI Rambler 30 oz Stainless Steel Vacuum Insulated Tumbler,newer versions of YTI insulated tumblers or other sizes models of insulated tumblers mugs glasses will not fit, buy with caution!

Size:30oz

Color:Clear

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,But not leak-proof.

Caution!

Please check the size carefully and buy with caution!

Lids are not universal.

Not all 30 oz lid caps are the same.

Please check that your old lid size is the same as the size of the lids we sell before purchasing to avoid buying lids that don't fit. (The top diameter size and the bottom diameter size!)

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.

Upper diameter dimension of the Lid

Upper diameter dimension：3.91inch

Bottom Diameter of the Lid

Bottom diameter dimension：3.74inch

The inside diameter of the lid is the diameter of the rubber ring on both sides of the measurement, not the diameter of the bottom lid plastic.

THE CORRECT WAY TO USE:

When we use this 3.74 inch ID lid to cover a cup that has a 3.65 inch ID, when we put the lid on the cup, it looks like the lid is too big and may feel like the lid doesn't fit. Don't worry, because the rubber ring we use is thicker and more elastic, so when you put the lid flat on the mouth of the cup may seem to be bigger, in fact, we only need to press from top to bottom, the lid can tightly cover the mouth of the cup, it can be very good for sealing. It will not fall out easily.