The UWell Caliburn Empty Cartridges are refillable pods designed for use with the UWell Caliburn Pod System. These cartridges come empty, allowing users to fill them with their preferred e-liquid flavors. Featuring a convenient top-fill design, they are easy to refill and typically have a capacity of 2ml. The Caliburn Empty Cartridges are constructed from durable materials and are compatible with UWell's Pro-FOCS technology for enhanced flavor delivery. They offer a reliable and convenient vaping experience, making them a popular choice among Caliburn users looking for customization and convenience.