it's a booster seat with a 5 point harness for 14kg+. DS is a very tall boy and big for his age so it has worked for us putting him into this. They are pretty exxxy about $459 I think, but for about $250 you can get a SnS maxi rider style booster but without the attached 5 point harness and you can buy a H harness to use with it. It is one that will still be legal with the booster seat law changes.