Larger and rakier on the side fins, smaller and more upright for the center fin.   
 
Lots and drive and hold rail to rail while allowing a looser freed up feeling with the smaller upright center.  A thruster set with a slight essence of your favorite 2 + 1.
 
Solid Fiberglass.
 
Designed with the Dumpster Diver 2 but will go great in any small wave board or conditions where you need drive and hold and the ability to pivot tight in the pocket.