Is your hydration bladder's bite valve worn out or leaking? These Maxmoral replacement valves are exactly what you need to get back to hassle-free hydration! You get two black silicone valves that work with pretty much any hydration pack system out there. The 90-degree design makes drinking super comfortable - no more awkward neck craning. The silicone material is soft on your teeth but durable enough to handle regular use. There's even a dust cover to keep dirt and grime out when you're not drinking. Installation is a breeze - just pop off your old valve and slide this one on. They fit standard 8mm inner diameter tubes, so compatibility isn't an issue. Perfect for hiking, cycling, running, or any outdoor activity where you need hands-free hydration. At this price for a 2-pack, you can keep one as a spare or share with a friend. No more dealing with leaky, nasty old valves - these will have you hydrating comfortably on all your adventures!