The Wismec Theorem RTA is a JayBo Designs and Suck My Mod Collaboration made of superior stainless steel construction and Pyrex glass reinforcement for a top of the line performance. Featuring one of the most innovative designs to date it utilizes the industry’s first Open Wicking System, reduced atomizer chamber, unique split positive post, vortex top airflow control, top-fill juice plug and intricate usability form factor with compromise. 22mm in diameter, it was designed with the explicit goal of maximizing the user’s experience. The implementation of the first Open Wicking System allows for unprecedented convenience, simply by removing the top cap sleeve to expose the building deck and wicking plug. If you are looking for a top of the line RTA, the Wismec Theorem RTA is the perfect option for you. At a great price, make sure to get it today!