The Sassy sensory ball set has three unique balls inspire all of baby's senses. One ball engages baby's sense of touch with its fabric textures and baby's vision with its bold colors and patterns. The next ball captures baby's sense of hearing with an easy-to-grasp hard plastic ball with a chime ball inside. The third ball is made of squeezable BPA-free plastic that has been scented to smell like vanilla, a calming scent that appeals to the baby's sense of taste. Appropriate for babies 6 plus months.