Nothing says refreshing like the taste of Watermelon. I mean, come on, it has water right in its name. Simple, sweet, and juicy. But take note, this flavor is so good you may just lose your rind. This LifeSip Flavor Cartridge is enriched with B vitamins and contains zero sugar, zero calories, is dairy-free, and has no artificial flavors or colors. We understand that drinking enough water can be challenging. At Cirkul, our mission is to make drinking water delicious, convenient, and fun.