Replacement Hydration Pack Bite Valves For Bladder Upgrade your hydration pack with one of these high quality bite valves, these are of a high standard to the valves supplied with most packs as this has a on/off valve which is particularly useful when you are on the move stops leakage, Fits All Bladder Brands including Camelbak Available - Straight & 90 degrees please select your preferred choice from drop down menu above Manufactured using medical grade silicone Easy to use just bite and sip! Fits all brands and types of hydration bladder.