The Geometric Rattle includes one round yellow ball with joyful face detail that contains a wooden bead, one pink cylindrical rattle that contains a bell, and one square toy that contains plastic beads and a colored lens that children can look through. Shake to entertain your baby with the sounds that the different shapes emit. As your children grow, encourage them to try some basic stacking and sorting activities, and have fun looking through the block's color lenses.