I-SIZE regulation maximum height and weight

The i-Size regulation simply determines for each car seat the maximum height and weight of children who can use it; it obliges the child to be in a rear-facing position until 105 cm/18 kg, i.e. about 15 months.

Why is it better to use an i-size car seat?

1. It offers better protection in the event of a frontal collision at the level of the head and neck.

2. In the event of side collisions, it provides better protection.

3. The risk is reduced by avoiding incorrect installation.

i-Size. What are the measures of the new regulation?     i-Size. The new regulation on car seats.

Since 2013, the new ECE R129 regulation has been implemented in phases and one of its sections is i-Size. All car seats bearing this label are no longer classified according to weight and age, being the height which uniquely and exclusively governs the labeling of car seats for infants and young children.

All car seats with i-Size regulation are installed in the vehicle with the Isofix system (for the moment a regulation entry without isofix is provided) to minimize the risk of incorrect installation. On the other hand, this regulation also concerns vehicles, car manufacturers must adapt them so that compatibility with i-Size seats is universal.

Objectives that the i-Size standard aims to achieve

1) Reduce the risk of incorrect installation: all i-Size devices must be installed exclusively with Isofix fasteners.
2) Orienting babies and children under 15 months rearward facing considerably improves head and neck protection, especially in the event of a frontal impact.
3) Classify devices according to size: i-Size devices can accommodate children up to 105 cm.
4) Provide side impact protection: i-Size certification requires a test that verifies the device's reaction to a side impact.
5) Ensure compatibility with all cars: all i-Size devices will be compatible with all seats of a car bearing the i-Size label.

What changes does the i-Size Regulation bring?

1. A simpler classification: the car seats are classified by height groups, so it is easier to adapt to the changing physiognomy of the child.
2. Universal: seeks to simplify installation and vehicle compatibility.
3. More rearward facing time: at least, babies should be carried in this newborn position until the age of 15 months, or about 13 kg, and it is recommended to carry them for the longest time. possible, even up to 4-6 years.
4. Includes side impact tests: side impacts account for 25% of the volume of traffic accidents, it is for this reason that a side impact test is now included n measuring the car seat's response to this type of accident.

Riding rear-facing reduces injuries by 90% by eliminating the pull on the head, which in the early years of life has a very high weight relative to the rest of the body and exerts excessive force on the neck in the event of an accident.