Eau Good Glass is a part of the successful Charcoal Filter Range by Black+Blum, which uses Binchotan active charcoal to filter water by absorbing impurities such as chlorine. It has been used by the Japanese for over 500 years and will make your tap water taste great. This range was created to encourage people to stop buying expensive bottled water and adding to the continuing single-use plastic global environmental problem. Eau Good Glass is hand-blown borosilicate glass with a natural cork stopper with silicone cap to ensure a leakproof seal. Eau Good Glass has the same iconic shape as the original Eau Good making it lovely to hold and drink from. The insulating neoprene sleeve will also help to protect the bottle from any knocks. Includes 1 x charcoal filter. & a neoprene sleeve. Borosilicate glass, Natural cork, Stainless steel, Silicone, Nylon, Neoprene