car seat experts over here please...

[NoBiggy]

How long can I keep my 18 month old in her rear-facing car seat? The top of her head is above the back of the seat, but only the top. She's over 10kg.

The issue, if you're wondering, I have the next seat up but it's occupied by her sister, who is only just 15kg (on some scales she comes up just under). Obviously, she's safer in her seat until she's 18kg. I don't intend to buy a second 9-18kg seat.

So, do I leave things until DD1 is a bit bigger (ie, definitely over 15kg), or go and get DD1 the next seat up tomorrow?

yes the hi-liner is discontinued, they replaced it with the Evolva, but you can still buy it and it is well rated (though not as well as the Evolva) by Which?

Hi Liner Tesco
Can't find it on Argos anymore

I am now the proud owner of a Britax Evolva 2-3 Isofit. I fitted it, and even hoovered my car.

Thanks for the help!