The backrest is a part of the child seat in groups 0, 0+, I and II, children up to 18 kilos and four years of age. It is an intrinsic element that protects the head and the neck of the child, the most delicate parts. However in the booster seats in group III, the backrest becomes optional and sometimes isn’t even included or it can be dismantled. This is based on the assumption that a child over 15 kilos can withstand the pull of the seatbelt. The booster seat is essential since the seat belts in vehicles are designed for people over 135cms: if children are smaller than that and not using a booster seat the seat belt will be incorrectly situated over the body (when the strap is over the neck and the face). Not only is the seatbelt offering little protection this way, it could inflict injury or even burns.
Advantages of the backrest
In the latest simulations carried out by the DGT in an independent laboratory, they concluded that the group III seats with a backrest, there were 6 times less serious injuries to the head in a lateral impact. This demonstrates the benefits of the backrests in groups 0, 0+, I and II that offer this same protection. Since it offers the same guarantees, at the MAPFRE FOUNDATION we would advise to keep the backrest even if your child is over 15 kilos when it’s use is not obligatory. When using the backrest it is easier for the child to wear the seatbelt correctly. Last of all, some of these seats include headrests, which absorb energy in an impact to provide more protection.
Remember that safety is our first priority when we seat a child in our vehicle, and you must be sure that the seat group corresponds to the weight and height of the child (not all of the seats in a group have the same dimensions).