Keep your child securely attached to the driver Smaller children fit up front, while larger kids fit on back Security buckle design, more convenient to take off This strap end adjustable waist children is in the range of 18.11-41.73in/46-106cm, suit for child 2 18 years old. Product total regulation range is 37.4-70.87in/95-180cm (including children's waist circumference and adult end waist) The strap back with reflective strip, it is safe driving at night