Packaging Content:With this lid, there's no need to worry about water or drinks spilling out. It helps prevent overflow when flipping the glass and keeps your drink insulated. Product Material:The classic transparent flip is made of durable transparent plastic, making it easy to see what is inside. The diameter of The outer is 70mm/2.75inch, and the inner diameter is 61mm/2.40inch. Functional Features:The well-defined beverage holes allow for direct sipping or straw use. The lid is sealed and insulated to maintain the beverage for a longer period of time. Usage Method:With this lid, you never have to worry about water or drinks spilling out when you rotate and roll the kettle. Application Scenario:Compatible with most suitable sized cups, bringing more convenience to life.