Replacement side-filling cartridges with built-in coils, compatible with the VINCI POD Kit, Drag Nano 2 Pod Kit, Vinci Q Pod Kit, and the Vinci Pod Royal Edition Kit, all from VooPoo. After vaping, the e-liquid flows back to the ‘sandwich’ on both sides, which effectively improves the problem of leakage preventer. After the e-liquid flows to the interlayer, the suction flow can bring the e-liquid back to the heating element. Enjoy vaping without the hassle. To refill the Vinci Pod Cartridge, pull out the silica gel plug on the side, refill, and replace the silica plug securely. After filling, let the e-liquid sit in the cartridge to fully saturate the cotton. Failure to do so will result in burning and one nasty hit.