Originally Posted by burke-a-bee
Um er...then why do backless boosters say 30 pounds +? (I just checked..I have 6 backless boosters.)
Because that is the minimum weight you can use the boosters with children who have gotten too tall for the car seat (as determined by where their head comes to on the seat back, NOT on how long their legs are). You'll be a billion times better off buying a taller car seat than buying a backless booster if your child is only 30 lbs.
Remember, switching your child from rear-facing to front-facing isn't a milestone--it's a downgrade. Switching your child from a 5-point harness to a booster seat isn't a milestone--it's a downgrade. Switching your child from a booster to an adult seatbelt isn't a milestone--it's a downgrade. Every.single.one of those transitions means your child is more likely to die in a car crash.http://www.aap.org/family/carseatguide.htm
has information that everyone who might ever have a child in their car needs to read.
(Note that "can ride rear-facing" does not mean should ride rear-facing. If you've got a car seat that says your child should only face rear-facing until their legs don't touch the back of the seat--you need to destroy that seat and get a new one since it's too old to provide effective protection in a crash.)
If you've still got doubts about RF verses FF, watch this:http://www.youtube.com/watch?v=psmUWg7QrC8
(Oh, and if you're worried about the legs looking "squished" think about how kids usually sit--they curl their legs up. Having their legs dangling out in front of them is both uncomfortable and can cut off circulation.)