A convertible car seat is a type of child safety seat designed to accommodate children from infancy through toddlerhood. It can be used in two different modes: rear-facing for younger children and forward-facing for older toddlers. This versatility allows parents to use the same seat as their child grows, making it a cost-effective choice. These seats are equipped with safety features such as harness systems and side-impact protection to ensure a secure fit in vehicles. Many convertible car seats also have adjustable headrests and recline positions, providing comfort and support for children at various stages of development.