Trek Tumbler Flip Lid Iowa State Leak-Proof: This lid creates a

Leak-Proof: This lid creates a leak-proof seal when the flap is closed

Includes four full-length straws that fit even our largest bottles

Cupholder Friendly: All Classic sizes fit in most cupholders

Leak Resistant: Comes with straw lid to prevent spills

Leak & Splash Proof: The clear flip lid and insulated flip lid are leak-proof when closed

Trek Tumbler Flip Lid Iowa State Leak-Proof: This lid creates aQuarter Turn Lid: Threading technology allows four different lid placements for your drinking hand preference Insulated: Flip Lid is double walled, keeping your drink the ideal temperature for hours Leak Proof: Flip Lid prevents spills and leaks when in the closed position