- Compatibility: Fits 20 oz tumblers, 10 oz lowball cups, and 20 oz Yeti Rambler cups. Does not fit 30 oz tumblers. - Superior design: Custom designed, easy to use lid with a retractable drinking hole cover that prevents spills and helps keep drinks hotter longer. - Safe and convenient: Made of clear, BPA-free plastic; features a wide-mouth drinking hole for drinking straight from the bottle or using with a straw. - Straw-friendly: Large opening allows for straw insertion. - Replacement quality and performance: Professional factory replacement lids are just like the original lids, but are splash-proof, shatter-proof, and provide an airtight vacuum seal to stop 99% of leaks. - Use scenario: While commuting with a 20 oz tumbler, the retractable cover reduces spill risk inside bags and helps maintain beverage temperature during travel. - Use scenario: During outdoor activities with a 20 oz Yeti Rambler, the straw-friendly opening supports easy sipping on the trail, while the retractable cover minimizes leaks on uneven surfaces. - Use scenario: At a desk or home, the clear, BPA-free lid allows drinking directly or with a straw, with reliable leak protection and compatibility across 20 oz and 10 oz options.