About this item Product details Finally, water is your favorite beverage! Experience the next level of hydration with this Cirkul Starter Kit. A simple turn of the dial transforms your water into a treat so good, you’ll be thirsty for more. The innovative Cirkul system consists of an ergonomically designed Cirkul Bottle and a lid that provides an opening for the flavor cartridge. Additionally, there are six fun flavors to take your water from boring to bursting with flavor.