Most products are unsweetened and use natural flavors; many explicitly state “zero sweeteners” or “no artificial sweeteners.” A small number include additional ingredients such as apple cider vinegar and prebiotics.
Product listings use both terms — some are labeled “Carbonated” and others “Sparkling.” In this context both labels are used interchangeably to indicate a fizzy, carbonated beverage.
Most are sold in metal/aluminum cans; product details typically list the container material as metal or aluminum.
Common formats are 8‑packs of 12 fl oz cans (96 fl oz total), 6‑packs of 12 fl oz cans (72 fl oz total), and single 12 fl oz cans.