Out on their own, back in on their own
One day, your child will crawl out of bed alone for the first time. Through the opening in the side, they climb out and back in by themselves. They decide when to get up or when to come and cuddle up with you. Before bedtime, you close the opening with the fall-out guard and your child sleeps safely. In the Middle version, there is even room for you during the bedtime routine.