Sawyer Two-Bag Complete Water Purifier System<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> 0.02 micron absolute hollow fiber membrane purifier; no residual chemical taste </span></li><li><span class="a-list-item"> Removes 99.997% of viruses， 99.99999% of bacteria， and 99.9999% of protozoa/cysts </span></li><li><span class="a-list-item"> Easily create bag-to-bag gravity system with two 4-liter bags (grey marked DIRTY， blue marked CLEAN) </span></li><li><span class="a-list-item"> Housing material made from food grade ABS plastic is light in weight 17 ounces dry and easy to field maintain </span></li><li><span class="a-list-item"> Backed by manufacturer's lifetime limited warranty </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41oEChodsuL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51mKzPy7MsL.jpg" noproxy>