ultravioLeaf 1 Liter (34 fl oz) Round Ultraviolet Large Glass Water Bottle 1 LT (33.8 fl. oz.). Height: 11" | Diameter of Bottle: 3.5" | Diameter of Opening 1" LABORATORY TESTED ULTRAVIOLET GLASS PROTECTS AGAINST HARMFUL LIGHT - Premium European Miron UltraViolet Glass (UV-A) Storage Containers for your water. It prevents harmful visible light rays from penetrating and degrading your stored products, while at the same time allowing beneficial UV and infrared wavelengths of light that can kill molds, algae, and bacteria. PREMIUM QUALITY STORAGE CONTAINERS - Contemporary Design. Heavy durable ultraviolet glass blocks air exchange and locks in aroma.Extend the freshness of your stored products for 6 months or longer. Modern screw on lid made of heavy duty BPA-Free plastic. HASSLE-FREE MONEY-BACK GUARANTEE! If for any reason you are not 100% satisfied, within 30 days, please notify us and return your ultravioLeaf product(s) for a no-questions asked, full refund.