Stainless steel construction looks great and allows you to avoid harmful BPA exposure from ploycarbonate plastic bottles. 25 oz. (Green)
From Science Daily:
"When it comes to Bisphenol A (BPA) exposure from polycarbonate plastic bottles, it's not whether the container is new or old but the liquid's temperature that has the most impact on how much BPA is released, according to University of Cincinnati (UC) scientists."