The EVOD is a fantastic kit that will work well for both new and experienced e-cigarette users. The EVOD features excellent bottom-coil clearomizers that are both easy to fill and offer incredible performance. Unlike other clearomizers, the mouthpiece of the EVOD is permanently attached and it is filled from the bottom. This two-piece design is a major advantage over other tanks with replaceable atomizer coils. If the EVOD atomizer coil fails unexpectedly and the tank is filled with e-liquid, the atomizer coil can be easily replaced without the need to drain the e-liquid in the tank first.