According to its maker, The Healthy Beverage Co., the Steaz Zero Calorie Sparkling Green Tea product line is the first certified-organic, all-natural zero-calorie carbonated soft drink on the market. Touted by the Newtown, Pa.-based company as a great alternative for diet soda drinkers, the stevia-sweetened beverage offers 120 milligrams of natural tea antioxidants and comes in four fruit flavors: Raspberry, Orange, Blueberry Pomegranate and Black Cherry. Replacing the current line of Diet Steaz Sparkling Green Tea, the produce retails for a suggested $4.99 per four-pack of 12-ounce fully recyclable glass bottles. Separately, Steaz has rolled out formula and packaging enhancements to its core Sparkling Green Tea line, adding B vitamins and lowering the sugar content for a 75-calorie-per-serving soft drink, and introducing labels that feature what it calls “zen-cool brand imagery.” For more information, visit www.steaz.com.