Reliable Fit - Designed specifically for Yukon 40oz Tumblers, this lid fits securely on the Yukon and Buccees Fit Forty Tumbler, ensuring a tight, leak-proof seal that keeps your drink contained. Dual-Function Lid - The 2-in-1 design includes a straw opening and a flip-top spout, offering both a straw option for easy sipping and a standard opening for quick access to your drink. Durable Build - Made from BPA-free and shatter-resistant materials, this lid is built to withstand daily use. The strong rubber seal effectively prevents leaks, even when your tumbler is on the move. Easy-to-Clean and Maintain - Cleaning your new lid has never been easier. The screw-on design allows you to easily remove the lid for thorough cleaning. It's dishwasher-safe, ensuring that you can quickly and efficiently clean it after each use, keeping your drinkware hygienic and fresh. Temperature Seal - Keep Your Stainless Steel Tumbler Cold. This 40oz Tumbler Lid Replacement Maximizes Temperature Efficiency.