Product Review

Features:
The closure straw hole allows you to slide open and shut closure.
The black silicone o-ring around the base can help itself cover the cup tightly.
Its small air hole on top of slider according airflow ergonomics helps reducing splashing.

Specifications:
Color: crystal clear with a little blue
Material: AS plastic
Product diameter: 3.94 inches

Notice:
It is easy to clean with detergent.
The air hole is designed to keep a same air pressure inside and outside the tumbler, making it convenient for you to drink water.
This lid will help reduce the spills, but not guarantee no leaks for a long time invertion.
You had better open the straw hole when it is filled with hot drink in case of the lip pop up for high pressure.

Package includes:
1 * Spill and splash resistant tumbler lid