Vaporesso Cascade Sub-Ohm Tank, as a fresh vape for every vape, it applies innovative isolation structure design, which separates coil and juice chamber, allows consistent, intense flavor at every puff. Also, reduces dry hit potential to extend the tank life cycle. Perfectly balanced triangular air flow provides users power vapor, smoother air flow, flavorful taste. All new GTM Cores available and replacement process is fast, easy and free. It is easier to refill the tank with the slide-n-fill design.