Have you ever tried to measure a child? In particular, a wriggling, active, uncooperative infant? It’s a bit like herding cats — all but impossible. Thanks to new smart technology from Nanit, you can let your baby’s sheets do the work for you. Nanit’s no stranger in this space having released a baby monitor previously.

The new Nanit Pro, combined with the matching Smart Sheets, keeps track of your baby’s height as they grow over time. You can take this information and present it to your pediatrician to help ensure your child is growing properly and meeting all of their health thresholds.

The Nanit Pro measures the specific ink pattern on the sheets to gauge the height of your child. It can take an accurate measurement of even the most wiggly baby by comparing the distance between the patterns. You don’t have to worry about choking hazards, either — the sheets are made of 100% cotton and contain no wires or sensors, so they are safe for babies and toddlers.

It works in a similar way to Nanit’s Breathing Wear, a device that measures your child’s breathing and sleep quality. The Nanit Pro provides parents with important information about their children without putting the child at risk.

Health-focused smart technology has seen a lot of growth in recent months (for understandable reasons.) Although many of the newest devices to hit the market are geared toward better personalization and control over their own health, an equal number are aimed at the most at-risk groups: The elderly and infants.

The Nanit Pro looks down on your child’s crib and provides you with real-time updates, letting you know when your baby wakes up, when they start moving around, and more. The camera streams at 1080p with crystal-clear night vision, and it has two-way audio so you can soothe your baby through your phone.

If you have the Nanit Breathing Wear, it can pair with the Nanit Pro to give you real-time information on your child’s breathing. The Nanit Pro works with Amazon Alexa and has multiple layers of protection to ensure your data is safe; after all, the last thing you want is someone to look in on your child without permission.