The Aegis Hero replacement pod can hold up to 2ml of e-liquid and has an adjustable airflow for more options. The pods have a top-fill design that makes refilling easy and reduces the risk of spills and leaks. With the adjustable airflow, you can customize your vaping experience to your liking.Each pod comes with the fantastic Geekvape boost coil series. It includes a 0.4ohm mesh coil and a 0.6ohm mesh coil, which are great for sub-ohm vaping. Replacing the coils is a breeze - just remove the old one, insert the new one, and you're good to go.