The original. The trailblazer. The Sir Edmund of water bottles. Nalgene's BESTSELLING water bottle for more than 30 years. For Your Everyday Adventures! Take your Nalgene bottle to the gym, office, camping, exploring and everywhere in between. This Nalgene water bottle is completely leak proof, made of virtually indestructible BPA-free Tritan, easy to clean and dishwasher safe on the top rack. Suitable for both warm and cold beverages (-40 to 212 degrees Fahrenheit); wide mouth makes cleaning and adding ice cubes easy. Free of BPA, BPS and phthalates, opening accommodates most water filters; marked with milliliters and ounces for easy measurement.