These are the pre-filled pods for the Level X system, so you fit one to your Level X battery rather than refilling anything yourself. Each holds 13.5 mL of e-liquid at 20 mg/mL salt nicotine and is good for up to around 7,000 puffs, though as with any pod that depends on how you vape and heavier use gets through it faster. The point of the Level X format is that you keep the battery and only replace the pod, which cuts both the cost and the waste compared with tossing a whole disposable each time. The draw is smooth, and there's a good spread of Flavour Beast flavours to choose from, the same bold fruit and iced blends the brand is known for. If you already have a Level X battery, this is the simple way to keep it running.