The stainless steel AQUA VESSEL is the first water bottle to offer BOTH TriMax triple insulation AND filtration. This technology keeps water cold for up to 36 hours without the annoyance and discomfort of cold, wet hands. Combining high performance with a sleek design, there's no better bottle for camping, travel, hiking, and everyday enjoyment. 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.