Ds is 17.5kg. Currently has a maxi cosi opal in my car and britax first class in dh's car. He also regularly travels in both sets of grandparent's cars. They each have a kiddicare tarmac.
He will need a new seat at 18kg but he is only 2y8m. Can't afford to shell out for a very expensive seat. Are there any HBB seats which make it difficult to reach the buckle? I am concerned about making this change while he is still so young!
TIA