Parent's new hero, Baby's best sleeping buddy.

According to the research made by an American doctor, Harvey Karp, babies in a mother’s womb are hearing sounds similar to the roar of a vacuum cleaner – not a lullaby or regular voices as we might think. Wombs are noisy and babies are used to the noises. That’s why after being born complete silence feels not natural – what they need is white noise making them feel as in mommy’s belly. It makes them relaxed, ease and helps them fall asleep.