‘i-Size’ is the new regulation for child car seats, offering the most stringent safety performance. Choosing the correct i-Size car seat for your child is easy, simply go by your babies length instead of weight. When using an i-Size car seat it is mandatory to keep them rearward facing until they are at least 15 months! i-Size will grow more popular over the next few years so we recommend keeping up with it's progress. To learn more you can read our guide https://www.direct2mum.co.uk/3413/i-size