The Wotofo Profile Unity 25mm Mesh RTA is a multi leveled vaping atomizer, adopting the unique build deck from the original Profile RDA, 3.5mL expandable juice capacity, and an ingenious leak-proof top fill system. Constructed from durable impact-resistant superior stainless steel, the Wotofo Profile Unity combines the unique build deck of the original Profile RDA and it's side secured terminals for the mesh heating element known as the nexMesh OFRF. With a centered ceramic cotton support, the cotton wicking material is pushed up against the nexMesh OFRF for a reliable rapid but even heating time to create phenomenal vape juice flavors. Set above the build deck is the 3.5mL standard juice tank but can be expanded to 5mL with the included replacement glass and chimney extension. In addition, the Profile Unity possesses a top refill system with a grooved top cap to ensure a fastidious connection, preventing pesky leaks and completing what would be a phenomenal vape.