The Geek Vape Aegis HERO Replacement Pod Cartridges have a generous 4ml e-liquid capacity with dynamic airflow control and top fill system featuring the convenient PnP (Plug N Play) coil system. The Aegis Boost coils feature outstanding flavor and vapor cloud production for a rich and satisfying vaping experience. The HERO Replacement Pods are available in a variety of packaging options to choose from, and compatible with the G Coil Series