ECE R129 Safety Standard

R129 i-Size car seats at a glance 

• You choose the seat depending on your child's height, not weight. This can make things safer as most parents know the height of their child better than the weight. You'll find it easier to ensure your child is in the right size seat. 
• It is considered the safest standard with improved head and neck protection. 
• Side-impact crash test results are assessed as part of the standard. 
• You have to use ISOFIX, which attaches the car seat directly to your car’s chassis, with an i-Size car seat. ISOFIX car seats are more likely to be correctly fitted in your vehicle. Bare in mind that you need an additional ISOFIX base to install a baby car seat using ISOFIX.