Is your favorite Thermos 16 oz bottle starting to leak? Don't toss it—just replace the seals! This Joshey repair kit comes with 3 silicone stopper valves and 3 rubber O-ring gaskets. They're made from BPA-free, food-grade silicone that stays elastic and creates a tight seal to stop leaks. Important note: These parts are compatible with the Thermos 16 oz bottle that has the wide spout lid. The gaskets specifically fit the lid style that has a line molded into it (check the pictures carefully). Installation is a breeze—just pop the old parts out and press the new ones in. In seconds, your bottle will be good as new, keeping drinks hot or cold without any drips. If you're unsure about compatibility, just message the seller before buying. A smart, eco-friendly way to extend the life of your bottle.