Before you give birth, you will need to purchase a car seat and have it properly installed. (You can’t bring your baby home from the hospital without it.) A convertible car seat, which faces the rear for younger babies and the front for toddlers, is an item you can use for years.
The Britax Marathon 70, $280, has top-of-the-line safety features designed to reduce crash forces and divert them away from your baby. Rear-facing: 5 to 40 pounds. Forward-facing: 40 to 70 pounds.