The KandyPens RUBI Pod is a refillable e-liquid cartridge designed for use with the KandyPens RUBI vaporizer. It is one of the only refillable pod cartridges in the industry, and is compatible with both e-liquid and oils. Featuring patent pending technology, the RUBI Pod includes a ceramic heating coil wrapped in Japanese cotton that delivers smooth, palatable, and huge clouds. The pod is leak-proof and free of spit-back, conserving e-liquid or oil and preventing messiness. While most e-cigarette pods are pre-filled, the KandyPens RUBI Pod has an open-system allowing the user to refill the cartridge by unplugging the fill port on the side of the pod. This gives you unprecedented freedom over your vaping sessions. Your limits. Your rules. Your RUBI.