Cool and pure, this bottle features a patented filter and freezer stick system which reduces chlorine taste and other impurities. Can filter up to 150 gallons of water before being replaced. Water flows easily through built in straw and filter to produce cold, great tasting water. Shatter, stain and odor resistant durable Eastman Tritan material. Can purchase filter refills at http://www.coolgearinc.com. 32oz.