The Viaggio Flex 120 has the unique capability to fully accommodate a child's growth with its 4D Total Adjust Technology. This means the booster can be adjusted in four different locations: 1) the headrest can adjust to five different positions vertically, 2) the upper backrest adjusts three positions vertically, 3) the side wings can expand out three positions, 4) the seat can recline five positions. These adjustments can be made independently from each other, allowing for a truly original experience in comfort. Securing the Viaggio Flex 120 to the car is made easier with the integrated rigid LATCH, equipped with a blind lock attaching system which prevents the seat from being accidentally released by another passenger.