VOOPOO DRAG X/S Replacement Pod, featuring a 4.5mL capacity, compatibility with the extensive PnP Coil Series, and is refilled from bottom. These pods are compatible with the Drag S & Drag X Pod Systems Features: 4.5mL Refillable Pod Capacity Bottom Fill System – Silicone Stoppered VOOPOO PnP Coil Series Bottom Press Fit Coil Installation