- High-Quality Materials: Our Replacement Lids are crafted from premium food-grade clear AS plastic and PP. These materials are non-toxic, BPA-free, sturdy, and durable, ensuring safe use and longevity. The thick lid enhances insulation for your beverages. - Perfect Compatibility: Designed specifically for 20 oz tumblers with a 3.25-inch mouth diameter, our lids are compatible with popular brands like Yeti Rambler, RTIC (Old Style Only), and many other tumblers or cups. They also fit 12 oz coffee mugs seamlessly. - Innovative Spillproof Design: The lid features a silicone stopper that enhances leakproof performance, preventing spills even when opening. Its unique vacuum-sealed airtight construction keeps your drinks hot or cold for extended periods. - Convenient Usage: The flip lid includes a wide-mouthed sip hole, designed to prevent contact with your nose, making sipping more comfortable and enjoyable. - Practical Applications: Ideal for outdoor adventures, daily commutes, or cozy coffee moments at home, this replacement lid ensures your beverages stay at the perfect temperature while minimizing mess. - Durable and Dishwasher Safe: Built to withstand daily use, our lids are dishwasher safe for easy cleaning and maintenance, making them a practical addition to your drinkware collection.