This comes with two flavor cartridges. It features StrawSip technology for effortless hydration, allowing you to sip without tipping the bottle. The bottle has a push-button, locking flip lid to protect the cartridge and prevent spills. The bottle is double-wall insulated, keeping drinks cold for hours. The dial on the cartridge allows you to adjust the intensity of the flavor or switch back to plain water. The included cartridges are LifeSip Strawberry Kiwi and Honeycrisp Apple flavors, which contain B-vitamins