How does the SNOO work, exactly? It’s magic, coupled with science, courtesy of Dr. Harvey Karp, of The Happiest Baby on the Block fame. It’s a responsive bassinet that combines gentle rocking with soothing white noise and swaddling. Basically, it seeks to imitate the feeling of being in the womb. It has five different levels of sound and motion, depending on your baby’s preference. The mesh walls increase air flow. And it’s got a built-in algorithm that can differentiate baby cries from room noise. You control it from your phone. It’s still pricey — don’t get us wrong — but it pays major quality of life dividends. Every product on Fatherly is independently selected by our editors, writers, and experts. If you click a link on our site and buy something, we may earn an affiliate commission.