DOOM RTA is designed for mesh coil. 4ml e-liquid capacity. The main feature of this RTA is “3D Liquid Flow System” which provides excellent liquid transmission to reduce overheating; The sloped upward airflow hits MESH coil with the angle that perfectly match with the MESH bending shape. It is easy to wick this RTA; Foxtail-M is with just right amount of cotton for MESH; You can easily cut off the cotton at the edge of the deck without any tricks. All in all, we hope to bring out an easy-to-use RTA with pure tasty flavor!