Drinking flavored water is a great way to encourage yourself to stay hydrated throughout the day. Cirkul is an interesting water bottle that lets you adjust the flavor of the water you drink with the turn of a dial. It uses flavor cartridges to get the job done.
The adjustable dial lets you change the amount of flavoring in each sip conveniently. Each flavor cartridge is good for 4 bottles of water. Cirkul is dishwasher safe and leak-proof. This project is getting funded on Indiegogo.