What is i-Size and how is it linked to R129? The idea behind i-Size is that all car seats will fit in all cars. Your car and your car seat must have Isofix, a fitting system that attaches car seats ...
It doesn’t spin and it doesn’t use ISOFIX, so fitting it involves threading your car’s seat belt through a series of fastenings, which I found to be a bit of an IQ test. Overall though ...