NALGENE Tritan Wide Mouth 32oz BPA-Free Water Bottle Nalgene's bestselling water bottle for more than 20 years Made of BPA-free Eastman Tritan co-polyester with superior impact resistance; dishwasher safe on top rack Suitable for both warm and cold beverages (-40 to 212 degrees Fahrenheit); wide mouth makes cleaning and adding ice cubes easy Opening accommodates most water filters; marked with milliliters and ounces for easy measurement Made in the USA and guaranteed for the life of the product