Mild vibrations will calm your baby’s gums when using the First Years, John Deere Massaging Corn Baby Teethers. By triggering the massage device, baby can learn the cause and effect developments. These Fun John Deere theme Teethers for Babies are crafted with care and designed for ages six months and over. Enjoy this farmer themed teether and your baby will love the color and design. Perfectly shaped and created so that baby can wrap their little fingers inside the loop holder for safe keeping until ready-for-use.