An infant car seat is a safety device designed to protect babies during car travel. It is specifically made for infants weighing up to 30-35 pounds and typically features a rear-facing design. This positioning helps to support the baby's head, neck, and spine in the event of a collision. Most infant car seats come with a base that remains in the car, allowing for easy transfer of the seat in and out. They often include a five-point harness system to secure the baby safely. Proper installation and use are crucial for ensuring the safety of the child while traveling.