R129: R129 regulations categorize car seats based on the child's height, with an upper weight limit for ISOFIX seats. Unlike R44, there are no predefined groups, allowing manufacturers to approve seats for specific height ranges. This flexibility means seats can cover a wide range of heights, effectively functioning as Combination or All Stages seats.
I-Size: i-Size is a seat category under R129 regulations, indicating compatibility with i-Size positions in certified cars. The majority of R129 car seats fall under the i-Size designation.
-Standardized side impact testing
-Stricter criteria for head injuries and abdominal pressure
-Mandatory rearward-facing travel up to 15 months
-Use of advanced Q dummies for crash testing
-Classification of seat usage based on child's height rather than weight
However, it's important to note that the effectiveness of a car seat depends on its suitability for the child and vehicle, so if an R44 seat is more appropriate, it should be used.