There is a great deal of information to be sorted through regarding safety seats. Unfortunately, there is really no industry standard and every manufacturer makes very different seats. When you add in that every state has somewhat different laws regarding how you restrain children, it leads to a lot of confusion.
The seats that the girls are in (in the van anyway) are Alpha-Omegas, and as the name suggests, you can use the seat from the time they are rear facing infants and convert it to a booster seat after they reach 40lbs. Emma is 4, but slightly under 40lbs, so she is still in a five point. The great thing is the back (where the shoulder straps insert) slides up as they get taller.
Quote:
they mention that you should not trust the LATCH system beyond 48lbs
Once you exceed the limits of the LATCH you could always go back to the "old-fashioned" seat belt and locking clip to secure the seat.
Several other things to note: Most carseat manufacturers recommend destroying a seat after six years or any type of accident. The plastic can breakdown with the extreme temps that most vehicles are exposed to. Check the dates and check for recalls on all of those seats also!!!!
Maybe we should all put racing seats with five pt harnesses in our family vehicles.

[/quote]