Made from 100 percent natural rubber to develop your baby's dexterity. Your baby can perfect his or her fine motor skills by manipulating the cubes, catching them, piling them up, or throwing them. On each cube, your baby can discover different raised motifs to vary his or her sensations of touch. The tangy colors also help to stimulate his or her sight. As they are made from 100 percent natural rubber, your baby can bite into these cubes. Light and easy to manipulate.