Perfect fit: The 40oz tumbler lid replacement is designed specifically for Stanley 40oz Quencher Tumblers ,the replacement cup lid is snug fit with 40 oz Stanley Tumbler with Handle and 40oz HydroJug Traveler Tumbler with handle Durable materials: The Tumbler Flip Straw Lid replacement is Made of premium BPA-free plastic,food-grade, Odorless,reusable on your Stanley 46oz Quencher tumblers Leak-Proof performance: Miavers stanley flip straw lid replacement can effectively prevent liquid leakage and splashing. As long as the Tumbler Flip lid is tightened during use, it can prevent liquid leakage and make you feel comfortable when carrying and using it Convenient Straw: The design of the Collapsible straw can prevent dust from entering the cup, make it more convenient, and make drinking water more hygienic Complete Set: This set includes two replacement Tumbler lids and two portable straws. The set make you to use it in various occasions and provide a better experience when using the Tumbler The 40oz tumbler lid replacement is designed specifically for Stanley 40oz Quencher Tumblers