The 32oz Narrow Mouth Sustain Water Bottle from Nalgene is an innovative drinking bottle. The Sustain product line bottle is made from a material derived from 50 percent plastic waste (using ISCC-certified mass balance), further offsetting the use of fossil fuels and reducing greenhouse gas emissions. But not only that, the material also contains no harmful plasticizers such as Bisphenol A (BPA) or Bisphenol-S (BPS). The Tritan Renew material is super light, unbreakable and neutral in taste and odor. The mouthpiece is narrow, making it comfortable and easy to drink from the bottle. Featuring a semi-buttress thread, the bottle is tightly sealed and leak-proof.