Trek Pivot Interchangeable Straw/Chug Lid X4WJ

Multi-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

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