Green Planet Bottle Stainless Eco-friendly Bottles (BPA-Free) Stainless stopper. Our bottles are made of stainless-steel. That means: Toxin-free (No harmful BPA's) Durable Non-leaching (no funny or metallic flavors) Easy to clean. Why should I care about BPA? Bisphenol A (BPA) is a polymer additive used in manufacturing many of the popular plastic water-bottles. The problem is that this chemical (which slowly leaches into your water) mimics estrogen and can induce hormonal responses linked to breast cancer.
