How about using this for water at cafes, etc.? I have been storing this at home. Please purchase with the understanding that it has been stored. This is the price for one stick. Available in 3 colors. You can choose from blue, white, and pink. I am waiting for your comments. See the last photo. Stick type Easily generates alkaline ionized water. Recently prevents the growth of E. coli. Removes residual chlorine. Does not increase trihalomethanes, which are carcinogenic substances. For both hot and cold water, coffee, tea, etc. New and unused Aqua Stick Japan's first! Pocket size One stick provides the vitalizing effect of 1,000 cups of water! Will be shipped via standard mail.