Eastman Tritan™ plastic. Free of BPA and phthalates.Comfortable silicone flip top spout. Features an activated coconut shell carbon filter that removes over 99.9% of Giardia and Cryptosporidium, as well as bad odors, bad tastes & chlorine. Filter is effective for 100 gallons of water or about 550 refills. Bottle can be used without filter. Durable, stain resistant, dishwasher safe. Holds up to 25 ounces. Measures approximately 93⁄4" tall.