Our new Nalgene Sustain product line is made from Tritan Renew, 50% certified recycled content further offsetting the use of fossil fuels and lowering greenhouse gas emissions. 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. For Your Everyday Adventures! Take your Nalgene bottle to the gym, office, camping, exploring and everywhere in between Suitable for both warm and cold beverages (-40 to 212 degrees Fahrenheit) Free of BPA, BPS and phthalates, opening accommodates most water filters; marked with milliliters and ounces for easy measurement