From Nanit, this breathing band features: 3-pack The Breathing Band works exclusively with the Nanit Pro or Plus cameras Monitor your baby’s breathing motion with no sensors on their body The Nanit camera tracks breaths per minute, by reading subtle movements in the fabric’s custom-designed pattern, and alerts you if your baby needs you The Nanit Pro and Plus cameras read the custom-designed pattern on the Nanit Swaddle to detect your baby’s breathing motion With Breathing Wear, you’ll see your baby’s breathing motion right in your Nanit app. Should they ever need your attention, you’ll receive alerts on both your phone and your camera The Breathing Band is soft, comfortable and fits over most pajamas Secure, Stay-Put Flaps - Open hook and loop attachments make for the perfect fit Feather Soft Edges - Pinch-proof and glides on as easy as a good night’s sleep *The Breathing Band should never be worn on top of a swaddle 360° View - Breathing Motion tracked in any sleeping position Cotton Machine washable and dryer safe For ages 0-3 months / 6-15 lbs.