Ok so my chubba is 12kg and his head is nearly at the top of his seat.

I was looking in the target cataloufe and they have a hipod senator convertible booster seat but I'm wondering if he is too young for this.

It still has the 5 point harness but when they get bigger you can take it out and just use the other one.

It says 8-26kg and has high side wings for superior protection.

I see that all seats aren't going by weight anymore but where their shoulders are against the levels.

I'm so confused. Please help