an angle that doesn’t interfere with breathing and protects them best in a crash. Many strollers are now designed to accommodate infant car seats. All infant car-seat models come with a handle, and nearly all have a base that secures to your vehicle with LATCH connections or a vehicle safety belt, a convenience that lets you remove the seat and use it as a carrier. You can strap most infant seats into a car without a base, using the vehicle safety belts, but most people don’t use them that way.
Infant seats have either a three-point harness–two adjustable shoulder straps and a lock between the child’s legs or–even better–an adjustable five-point system–two straps over the shoulders, two for the thighs, and a crotch strap. The handle usually swings from a position behind the seat’s shell when in the car to an upright position for carrying. Remember to swing the handle to the vehicle position before each trip. Slots underneath most seats help them attach to the frame of a shopping cart.
With an infant car seat, you also can move your baby from car to house or vice versa without waking him or her up–a plus for both of you. Note also that extra bases are available so you can keep a secured base in each of your vehicles. Your baby may outgrow an infant car seat quickly and become too heavy for you to use it as a carrier. As a result, you may find yourself having to buy a convertible car seat after your baby is 6 to 9 months old. However, our advice is still to start with an infant seat before moving up to a convertible seat.