Ds1 is 3.10yrs, 21kg's and 109cm.
He's in a britax TWE (in toddler recline mode) at the moment but the top of his head is now level with the top of his seat. Has he outgrown this now or can I wait until his eye's/ears reach the top of the seat?
If I can wait, am I allowed to use the top harness slots as the ones below are too low now.
Google giving conflicting advice on both points and no longer have manual.
His alternative is FF in a radian with 5point harness.