Car seats with isofix for children from 15kg to 36kg, approximately from 3 years to 10-12, with 135-150 cm in height. In AlgatecKids we recommend to use them until 1.50 meters of height of the child. In this group the child is already fastened with the car's seat belt. We have put aside the harnesses. It is therefore interesting, especially in the first stage of use, when the child weighs more than 15 kg, that the car seat includes the maximum number of safety elements, such as car seats that include a fourth anchorage point. Also the lateral protections, and that the car seat can evolve in height and position with the child.