The Nuna Rava is a popular car seat among parents due to its ease of Installation, extended legroom for rear-facing, and GreenGuard certification. The seat has a simple installation process, with clear labeling and color-coded indicators that make it easy for parents to secure it in the car. The extended legroom feature ensures that the child can remain rear-facing for longer, which is considered safer. The GreenGuard certification means that the seat has been tested for chemical emissions and is safe for indoor use.