We've never seen a parent vibrate their child like a bouncy seat and hardly seen one swing a baby around like a swing. But, we've seen thousands of parents scoop their little ones up in their arms and bounce and sway. And that's what the 4moms mamaRoo Infant Seat. It moves like you do. The 4moms team used motion sensors to measure the movements of real moms as they soothed their babies, and built those motions right into the mamaRoo. When we say unique we mean it. It has 5 different motions and 5 different ways to soothe and entertain your little one. That's just better.