Strawberry Kiwi, the flavor of spring-time in paradise. Perfectly ripened strawberries splashed with tangy-sweet tropical kiwi. One sip and you’ll know you have arrived. This LifeSip Flavor Cartridge is enriched with B vitamins and has zero sugar, zero calories, and 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.