UD is dipping their toes in the water of sub ohm tanks by introducing their newest device, the Zephyrus. Constructed of stainless steel and a glass tank, the Zephyrus features large holes for airflow (3mm × 6.5mm). Coming stock with a 0.3Ω replaceable sub ohm head the Zephyrus, along with its nice airy draw, will pump out some major vapor. Not only does this tank fill a room with vapor, it also provides superb flavor with the Japanese organic cotton within the coil heads.