These are empty replacement pods that you can use with the Uwell Caliburn Explorer pod vape kit. They are made for mouth-to-lung vaping and have side fill ports. With these pods, you can use either the Uwell Caliburn G or G2 coils, and you can even use them together if you want. The pods have separate spaces for each coil, so you can fill them up separately. The coils can be different, which means you can have different vaping experiences depending on the mode you choose on the Caliburn Explorer device. You can also use two of the same coil to get more power and stronger flavour. Just remember, these pods do not come with coils included. You will need to get the coils separately.