I-Boost i-Size is a perfect solution for children who have outgrown their car seat but have not yet reached the height of 150 cm. This booster seat is ideal for children who are 135-150 cm tall - it ensures that the car seat belt runs optimally over the centre of the shoulder and chest. This minimises the risk of injury that can occur in the event of unexpected braking or collisions in road traffic. The I-Boost i-Size booster seat has been tested according to the latest i-Size safety standard R129 and has successfully passed the strict tests. It is lightweight (it weighs only 2.5kg), so you can easily carry it from one car to another. It can be installed in vehicles with or without Isofix.