The ULTRA LITE is part of our Tritan™ line of lightweight, durable bottles and features an activated coconut shell carbon water filter which is effective for 100 gallons of water or about 550 refills. This is an excellent portable water filtraton option for those who want a compact option whenever you want clean, good tasting water. – WARNING: THE FILTER DOES NOT PROTECT USERS AGAINST FOOD BORNE OR DISEASE CAUSING BACTERIA, VIRUSES, GERMS OR OTHER DISEASE CAUSING BACTERIA. – If traveling outside of the U.S. or for the highest level of protection, we strongly advise consulting a travel expert before using filter. It may be necessary to use supplementary purification tablets or water treatment drops for the region where you are traveling. – This bottle is only for 8 years old & up. The silicone spout is a small removable part and can be torn if excessively chewed. If you note any damage to the spout, stop using and replace.