I have the other GW Little harnesses
http://www.gwlittle.com/prod/Product...rness_470.aspx) that protect the sternum in pink and red for the girls and have decided to get the seat belt to hook them in the car and do away with the seats.
I bought two look out seats that they would hang over the side when we went anywhere. Then I bought one other that have taller sides to see it if worked and paid almost $100.00 for it. Didn't work either. Now I'm with you. I'm going to just buckle them useing only their harnesses and a buckle. I'm still looking for a buckle that fits in the car seat belt.