Which car seat for 16kg child?

[dancerandprancer]

We want to get our DD a new car seat. The problem is she is only 2.8 but weighs 16kg. Just not sure which category to go for. Ideally would like an ISOFIX one but all the isofix over 15kg seats dont have a harness. ( just use adult seat belt. I cant help but feel that she is a bit young to use the adult seat belt. Anyone with similar issues?

Do Britax do an isofix Evolva 123? Harness does up to 18kg then becomes a highback booster

Thanks for answering. Not sure. I know they do the 123 but thought it was not isofix. will have to double check.

The straps on a britax elite go up to 25kg, but it's not isofix.
I think there's a new seat out that has straps suitable for more than 18kg,it may have isofix, but I can't remember what make it is.
I must have seen it mentioned on here somewhere though.