Nalgene Sustain Tritan BPA-Free Water Bottle Made with Material Derived from 50% Plastic Waste (using ISCC certified mass balance), 32 OZ, Narrow Mouth, DenimSustainability in Your Hands: Our new Nalgene Sustain water bottles are made with material derived from 50% Plastic Waste (using ISCC certified mass balance). This material is powered by next generation recycling technology that transforms plastic into high performance BPA BPS free bottles for everyday (and safe!) use. Leak Proof Design: This Nalgene water bottle is completely leak proof, made of durable BPA free Tritan, easy to clean and dishwasher