I think these seats look awesome and are NOTHING like shield boosters. I don't know exactly how they work but I know they are very different than the shield boosters be had here. They are closer to the child's body, holding them in the seat, so there is no gap between the shield and the child. I believe the shield portion also covers more area on the child's body than the ones we had here. I *think* they reduce neck load better than 5 point harnesses but I'm not positive about it. They don't promote early forward facing either, IMO. This seat is available in countries where they forward face early anyways and, from my understanding, this type of car seat may actually be safer for young forward facers than 5 point harnesses. I am sure the linked thread will explain more about them but I, personally, think they're pretty cool