Made from TritanTM Renew copolyester, which is partially composed of recycled materials, Nalgene Sustain Purple 32 oz wide-mouth bottle is lightweight, leakproof, and BPA- and BPS-free. Its wide-mouth design makes it easy to clean and fill, and it accommodates ice cubes with ease. Its one-litre capacity is ideal for school, the office and outdoor excursions.