The First Years Gentle Vibrations 3-in-1 Crib Soother

The only in-crib, under-mattress vibration system, this Soothing Sounds and Vibration System creates an ideal sleep environment for your baby. Your baby can now be lulled to sleep in her or his crib by the same kind of vibrations that soothe your baby in the car or bouncy seat! When it's time for your baby to sleep, the crib mattress will gently vibrate while one of six calming audio options plays!