Trek Pivot Interchangeable Straw/Chug Lid color_PBZ The top lid doubles as

The top lid doubles as a jigger and has 1/2 & 1 ounce measurement marks

Insulated: Flip Lid is double walled

Premium Copper Coated Insulation Layer: The exterior of the inner wall

No Mess: Double wall technology prevents condensation sweat

Kids Backpack: This Barbie™ Fletcher is a school backpack great for children ages 4-7

Trek Pivot Interchangeable Straw/Chug Lid color_PBZ The top lid doubles asMulti Use Lid: Featuring two interchangeable lid pieces, you can choose your preferred sipping method straw or chug and easily swap out the sipping component within the lid at any time. Insulated: Lid is double walled, keeping your drink the ideal temperature for hours Leak Proof: Interchangeable Straw and Chug Lids prevent spills and leaks when in the closed position