Nalgene took their iconic design and the same tough, safe, BPA/BPS-free material you know and trust, and revitalized it with innovative recycling technologies. Sustain is powered by revolutionary recycling technology that transforms single-use plastic waste into durable materials, offsetting the use of fossil fuels and lowering greenhouse gas emissions. By reducing the amount of plastic going into the waste stream with Sustain, you get all the performance, function, aesthetics and safety of virgin materials while meeting your sustainable goals.