Kona Travel Mug Flip Lid

Flip Lid: This lockable, push-button flip lid works with all Simple Modern Kona tumblers.
Insulated: This lid is double-walled, keeping your drink at the same temperature for even longer.
Leak-Proof: The lid is designed to snap closed to prevent leaks and spills as well as lock back when opened to allow for easy drinking.

Patent Pending