85% sparkling water and 15% fruit juice. Only 2 grams of sugar from the fruit juice and 15 calories for the entire can. 42mg of all natural caffeine from the green coffee bean (about the same as a diet soda, without all the junk). No added sugar. No preservatives. No Stevia. No high-fructose corn syrup. No ingredients you can't pronounce. The second ingredient after carbonated water in each of our sodas is the juice of the listed flavor on the can.