Eau Good is the original design from 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 is made from Tritan with a natural cork stopper with silicone cap to ensure a leakproof seal. The iconic shape is also lovely to hold and drink from.