Thermos NSF/ANSI 53 Certified 22 Ounce Tritan Water Filtration Bottle， Clear</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Filter is NSF/ANSI 53 Certified and reduces contaminants such as: aesthetic chlorine， chloramine， atrazine and particulate class V contaminants</li><li>Innovative gravity-fed filtration method in a portable filtration bottle ensures contaminants will not bypass the filter by force</li><li>Open spout allows for great flow rate with no forceful sucking or squeezing required</li><li>Hygienic， locking， push button lid with one-handed operation and integrated carrying loop; 22-ounce capacity</li><li>Replace filter every 20 gallons (or 128 full bottles); both bottle and lid are dishwasher safe</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/31JxW6jqXrL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31Ym3%2Bi2nWL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/413mwNUnrWL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/41Y8sKmABsL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/419oy6rXONL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/51in3qD6W7L.jpg' noproxy></br>