This child-safety seat has a carrier handle and can be installed with or without its base. Most of these rear-facing seats are rated for infants from 5 pounds to 20-plus pounds, but check the owner's manual for height and weight limits. Some important things to remember:This child-safety seat has a carrier handle and can be installed with or without its base. Most of these rear-facing seats are rated for infants from 5 pounds to 20-plus pounds, but check the owner's manual for height and weight limits. Some important things to remember:

  • In terms of weight, the seat's harness straps are only designed to retain the weight limit listed, so it's important to stop using this seat when the child outgrows it. 
  • These seats also have height limits; the child's head should be at least an inch short of the top of the seat. If your child's head is above that, the head and neck won't be supported in a crash; it's time to upgrade.
  • When this seat is installed, it should sit at a 45-degree angle. This helps ensure that the child's airway remains open and crash forces are spread correctly in the event of an accident. Use the level guide on the side of the seat to position it correctly. Some seats have adjustable feet to change the angle; you can also use a foam pool noodle or rolled towel in between the seat back and the car seat base to get it level.