CamelBak 1-Pack Relay Accessory Filter</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Long lasting filter provide 4 months use per filter， 2x the competitor</li><li>Double Filter Technology， 2x more effective and filters at the speed of your faucet</li><li>Vegetable based carbon Filter</li><li>Easy to replace</li><li>Relay Replacement Filter</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/31tBfe-8YlL.jpg' noproxy></br>