The Stratus is custom RDA designed by BukuVapor in 2014. The Stratus features a dual center post that makes building a breeze. The 4 air holes provide a perfect amount of airflow to maximize flavor and vapor production. The screw on top cap makes easy access for dripping and will not misalign your air holes. The Stratus also has a sleek, low profile design that looks great on any mod. The Stratus was designed in the USA but manufactured in China.