Pat's Backcountry Beverages eco2SYSTEM Carbonator Starter Kit 2.0 This starter kit contains: 1 Carbonator Bottle, 6 Activator Packets, and 5 Pats All-Natural Soda Concentrate packets. Every packet makes a refreshing 16oz beverage and comes in Ginger Ale, Lemon Lime, Root Beer, Cola &amp; Pomegranate Cola. Our BPA-Free, shatter-proof 20oz Carbonator Bottle is designed to replace your everyday water bottle, but with the added function of being able to carbonate any liquid you put in it. When ready to drink, the bottom unscrews to act as a convenient share cup. The carbonation comes from a reaction of food grade citric acid and potassium bi-carbonate that takes place in the blue reaction cup.