- Package Contents : This pack includes 2 silicone bite valve replacements, perfect for refreshing your water bottle's mouthpiece and enhancing its longevity. - Quality Material : Crafted from soft, BPA-free silicone, our mouthpiece replacements are designed for durability and safety. Enjoy peace of mind with every sip. - Easy Installation : Replacing your old spout is simple. Squeeze out the old valve from the bottom of the lid, align the new spout, insert it from within the lid, and push firmly to secure it in place. - Compatibility : Each replacement spout measures approximately 3.82 x 3.17 cm (1.5 x 1.25 in). Please verify your water bottle model before purchasing. These replacement parts are specifically compatible with the Ello Cooper stainless steel series, including 18oz, 22oz, 32oz, and 40oz bottles. Note that this product is not affiliated with Ello Cooper. - Practical Applications : Ideal for outdoor adventures such as hiking, camping, or gym workouts, these bite valves ensure you stay hydrated without hassle. They're also great for everyday use at work or home, providing a reliable and reusable solution for your drinking needs. - Versatile Use : Whether you're refilling your bottle for a run, a bike ride, or simply staying hydrated at your desk, these bite valve replacements offer a convenient and effective way to keep your hydration system functioning optimally.