Enhance your drinking experience with our 40 oz Tumbler Flip Straw Lid! Designed for compatibility with Stanley Cups and HydroJug Travelers, this lid features a convenient flip straw for easy sipping on the go. Its spill-proof and splash-resistant design ensures that your beverages stay secure, making it perfect for outdoor adventures, workouts, or daily use. Made from durable materials, this lid is built to withstand the rigors of any lifestyle. Upgrade your tumbler and enjoy mess-free hydration with this essential accessory for beverage enthusiasts!