Wotofo diligently worked to bring you two incredible atomizers. The Troll and the Sapor have both blown away the competition with their adjustable airflow configurations. While other companies rely on one way airflow exclusively, Wotofo found a way to open your atomizer up to both vertical and horizontal airflow configurations so you can send air over your coil the way you want it to flow. You'll get better flavor, more vapor and an all-around greater sense of satisfaction every time you use a Wotofo atomizer.