A clearomizer is the refillable tank (of different sizes) that houses the e-liquid. A clearomizer plus a battery make up a complete e-cigarette. It has a wick and an atomizer coil that's connected to the battery. The wick delivers e-liquid to the atomizer coil, which heats the e-liquid when the battery is activated. Clearomizers come in different sizes and features, most popular with new vapers is the disposable clearomizer as it's no fuss to fill and replace. Browse our full range of clearomizers here.