Abstract: This invention in question is a fastening belt system designed for use in child automobile transport solutions, and in particular, in child car seats. The fastening belt system is characterized by its use of at least one belt and five anchor points (2), (3), (8), (9), (16), potentially equipped with openings and buckles, which create a harness system composed of the right breast strap (10) and the left breast strap (11) that crisscross at the child's chest, while the right hip strap (13) and the left hip strap (12) belt in the child's legs at the hips. The right breast strap (10) runs from the upper right anchor point (3) to the lower left point (9); the left breast strap (11) links the upper left anchor point (2) with the lower right point (8); the right hip strap (13) links the lower middle anchor point (16) with the lower right point (8); the left hip strap (12) runs from the lower middle anchor point (16) towards the lower left point (9).