Perfect Fit for YETI Rambler 30 oz Travel Mugs: Crafted to fit exclusively YETI Rambler 30 oz Travel Mugs with threaded tops. Not suitable for YETI Rambler 30 oz Tumblers, Stackable Tumblers, Cocktail Shakers, or other 30 oz tumblers without threads. Kindly check your mug type before purchasing to ensure compatibility. Reliable Leak-Resistant Design: Equipped with a dual-slider screw-in structure (non-magnetic) that helps contain leaks and splashes, performing well even during bumpy commutes or sharp turns. The secure twist-on closure adds stability for daily on-the-go use. Safe & Sturdy Materials: Made from BPA-free, food-grade clear plastic (AS material) that's odorless and won't alter your drink's flavor. It's impact-resistant, standing up to accidental drops and maintaining durability through regular use. Effortless Cleaning: Simply rotate the back slider 90° to detach it easily—no tricky crevices to scrub. Both the lid and slider are dishwasher-safe, cutting down on cleanup time and hassle. Secure Fit for Daily Travel: The screw-on design keeps the lid firmly in place during car rides, walks, or commutes. Helps prevent messy spills so you can take your hot or cold drinks. Lids for YETI Rambler 30 oz Travel Mug(2 pack)