The Stronghold lid is specifically designed for the 40 oz Stanley Quencher H2.0 tumbler and is not compatible with other Quencher tumbler models. Unlike traditional straw lids, the Stronghold lid allows for drinking without a straw. It features dual-slider technology to effectively prevent leakage and splashing. Made of transparent AS plastic that is BPA-free, it is impact-resistant and shatter-resistant, ensuring long-term reuse. Easy to clean, simply rotate the slider on the back 90° to detach it and place it in the dishwasher. Whether used for cold or hot beverages, this lid can maintain temperature for a long time. Features: 1. The replacement Stronghold lid is threaded and ONLY 40 oz Stanley Quencher H2.0 tumbler. 2. Come with a gray silicone o-ring around the base, which helps cover the cup tightly. 3. The black sliders witch can open and close for sipping directly or for a normal straw. Enjoy your favorite hot or cold drink! 4. It’s nice that the slide disassembles ,You can remove the slider to wash which you do not worry about smudges. 5. Crystal clear lid so you can always see if you're in need of a top off,and even repeated use for years,it still stay crystal clear. 6. Whether with cold or hot drinks, this lid can keep the temperature longer. Note: 1. They are easy to clean and dishwasher safe, but avoid using in microwave. 2. The Stronghold lid is threaded and ONLY FITS 40 oz Stanley Quencher H2.0 tumbler,won't fit other Quencher tumbler models.