30cm tall iridescent straight tube with a thick, heavy base, disk diffuser and glow in the dark anchor that sits atop said diffuser. It comes ready with a 10cm 18mm - 14mm reducer stem and 14mm bowl. The diffuser works by diffusing water and smoke pulled from the base as you inhale. The rig needs to filled quite high to draw water up into the diffuser. The diffuser will drain after use.