Rockstar - Original has 270 calories and 63 grams of sugar in a 16 oz serving.
Learn more at https://www.pepsicobeveragefacts.com/Home/product?formula=BACX513&form=RTD&size=16&PBF
Spindrift - Blackberry has 13 calories and 2 grams of sugar in a 12 oz serving.
Learn more at https://drinkspindrift.com/drinks/blackberry-sparkling-water/