Voyager 20oz Stainless Steel Tumbler with Leak-Proof Flip Lid - Insulated Travel Mug for Hot & Cold Beverages - Perfect for Office, Gym, Hiking and Commuting

One Size Fits All: These Flip Lids fit all Simple Modern Voyager Travel Mugs.
Leak-Proof: The Flip Lid is leakproof when the flap is closed.
Insulated: This lid is double-walled, keeping your drink at the same temperature for even longer.