<b>Use This Pack 2 Mouthpiece to Extend the Life Span of Your Hydration Bladder Bite Valve</b><br><br>a new 2 pack bite valve mouthpiece replacement kit, a great accessory for any sports enthusiast. It's easy to use, easy to clean and works great. <br/><br/> This hands-off hydration valve ensure you stay hydrated while focusing on your sports efforts. <br/><br/> Two Color Selections:comes with two colors for your selection: Black, or Light Blue.<br/><br/>It The valve works with a simple bite and sip and then seals itself to avoid drips. <br/>