llustrated metamorphic trade card depicting a "before using" and "while using" scene of children playing inside. Before using, the children are seated and sullen with their heads in their hands because they have holes in their pants and tights. While using, they smile and build a castle. One boy holds a small puppet booth labeled, "Punch & Judy". Advertising text promoting "Children’s patent elastic knee protector" printed on verso below "before using" image, which folds up to create the complete scene.