I know they require head support, but does that go for the thicker combination ones? The ones without headrests that go up and down? The 3 in 1s and the Alpha Sport, Traveler, Summit, etc? The 3 in 1s look like they shouldn't care, the Alpha Sport the same, the Summit looks like it would be ok, the Traveler looks like a kid sitting in it would break it anyway... What's the deal with those, since I know Dorel boosters like the Protek and Pronto and Apex require support from the car.
Wendy
Wendy