In the search for more environmentally friendly design, paper cups have replaced Styrofoam cups in most fast-food restaurants. These cups are less effective insulators, and the paper cups often get too hot for the hand. A design team is in search of a better disposable coffee cup. The designs to be evaluated are: (a) a standard Styrofoam cup, (b) a rigid injection-molded cup with a handle, (c) a paper cup with a cardboard sleeve, (d) a paper cup with a pull-out handle, and (e) a paper cup with a cellular wall. These design concepts are to be evaluated with the Styrofoam cup as the datum.