If your action figures like to rock, this Tamashii Effect set is just what they need -- it allows your figures to break up and move around boulders with ease! It can be used as one big rock, or several smaller rocks. This one is gray in color; the set can be combined with the beige rock set (sold separately) to expand the environment for your figures to play in, and there are holes in the rocks to accommodate a Tamashii Stage support (not included) to keep your figures in place! Made of plastic. Figures pictured are not included.