The company states 94% of parents who use the smart sock report improvements in their own sleep, as well as reduced anxiety. ... Well, the Owlet sock tracks a baby's oxygen levels and heart rate while he or she sleeps.

Why is the Owlet not recommended?

The Owlet Smart Sock 2 (OSS) is marketed as a device designed to monitor heart rate and oxygen levels. ... Moreover, marketing these devices for use in otherwise healthy, asymptomatic infants may further exacerbate parental anxiety and worry.

Does the owlet sock prevent SIDS?

It found that the Owlet Smart Sock 2 detected hypoxemia but performed inconsistently. And the Baby Vida never detected hypoxemia, and also displayed falsely low pulse rates. "There is no evidence that these monitors are useful in the reduction of SIDS in healthy infants," says Dr. Robinson.