What is the difference between R129 and i-Size?
While R129 car seats and i-Size car seats undergo similar safety testing, they are not the same thing. The easiest way to think of it is that i-Size is an enhancement of R129. I-Size focuses on ensuring that car seats fit safely into vehicles using ISOFIX anchor points. Therefore, while all i-Size car seats may comply with R129 standards, not all R129 car seats may be i-Size compatible. Many i-Size car seats have ‘i’ at the beginning of the product name or you can look out for the i-Size logo.