Lava is the core of Lava Lite. Produced by the original manufacturer, each lava lamp is filled with hypnotizing mesmerizing lava blobatude (goo for those less technical). This 11.5" tall version is great for smaller spaces like offices or dorms. Made of metal, glass and liquid. (If we told you what was inside, we’d have to kill ya…so don’t ask.) 15 watt bulb included.