A car seat base is a device designed to securely hold a child car seat in place within a vehicle. It typically attaches to the car's seat using either the vehicle's seat belt or the LATCH system, which stands for Lower Anchors and Tethers for Children. The base ensures that the car seat is stable and properly positioned for safety during travel. Many car seat bases are designed for easy installation and removal, allowing parents to transfer the infant car seat between vehicles without hassle. Some bases also feature indicators to confirm correct installation, enhancing safety for the child while on the road.