Sheet to complete the Nanit baby monitor set up! Place your baby on the sheet and the camera automatically reads the custom-designed pattern to estimate baby’s measurements—allowing you to track baby’s growth easily and accurately with the app. “Watch Them Grow” feature automatically creates a montage of baby’s growth for you to save and share. Track baby’s progress between doctor checkups. Super cool! The custom-designed pattern on the Breathing Band works with the camera to safely detect your baby’s breathing motion in almost any sleep position. Both made of soft, 100% cotton that’s machine washable and dryer safe.