It is true that the foam side is relatively thin and the hull stiffer than the model "Boulgom" we used. However, it must be considered that the felt for a child 3 years old is not the same as ours. In loccurrence, my daughter seems very happy with her new seat. The seat has foam bubbles that makes it more comfortable and the back is thicker than the sides.
The ISOFIX securing a seat in Renault Espace IV happened without worry. Once well placed belt and the height of the headrest adjusted according to the size of the child, the child is well positioned and attached "as a great." The belt passes in a seat guide at shoulder level. The height adjustment also changes the width of the side shields. It is practical and clever.
The backrest can be tilted thereby putting the child in a more comfortable position during long journeys if your seat back also tilts.
The second seat purchased is placed in a car without Isofix. This seat allows for Isofix clamps can be folded under the baby seat. It is the belt that holds the seat and child. You can therefore invest even if you think a new car!
I recommend this chair both pretty, qualitative, cheap and convenient.