The Baby Shusher is a revolutionary new tool for parents using an ancient but doctor-tested technique to help soothe your fussy baby.The Baby Shusher breaks a baby's crying spell by engaging his or her natural calming reflex. The rhythmic shush reminds the baby of being inside the womb, where there is a constant inundation of loud sounds from blood flow and other in utero noises (up to 95 dBs, or the sound of a very loud vacuum cleaner). These sounds, which may initially seem harsh, are actually very calming to a baby.