[Perfect Fit] Our 30oz replacement tumbler lid is designed for compatibility with a variety of popular tumblers, including the 30oz YETI Rambler, 14oz mug, 35oz sippy cup, and many others. With an inner diameter of 1.94 inches and an outer diameter of 2.1 inches, this lid is an ideal fit for your drinkware. (Note: This lid is not compatible with rambler bottles, water bottles, or travel mugs with fortress lids.) [Safe and Premium Material] Crafted from high-quality ABS plastic, our 30oz YETI replacement lid is BPA-free and environmentally friendly. It is shatterproof, sturdy, and built to last. The food-grade rubber lid ring ensures a tight seal for your convenience. This lid is dishwasher safe, although it should not be used in the microwave. [Lid with Strong Slider] Each tumbler lid features a spill-proof design with a reliable slider that prevents spills during travel. The slider operates smoothly and is easy to remove for cleaning. You can drink directly from the hole or use a straw, ensuring a comfortable experience. The 30-ounce size allows for easy handling and cleaning. [Splash-Proof and Heat-Insulated] The replacement lid forms a secure seal to prevent leaks, thanks to its built-in silicone O-ring. This lid effectively keeps your beverages at the desired temperature, whether hot or cold, throughout the day. Enjoy peace of mind knowing there will be no spills while you drink. [Easy to Clean] The crystal-clear design allows you to monitor your drink levels without removing the lid. The black closure is easily removable for thorough cleaning under running water. Ideal for daily commutes, outdoor adventures, or relaxing at home, this replacement lid enhances your drinking experience while maintaining the performance of your favorite tumbler. Upgrade your cup with our reliable and practical lid today.