The recline position of iZi Flex FIX i-Size is designed to help your child lean back when sleeping in the car and thereby remain safely within the seat's protection area and keeping the vehicle belt in the correct position.
Therefore, we recommend you to use iZi Flex FIX i-Size in its upright position when your child is awake but to use the seat's recline position when your child starts getting sleepy.
The reclining position can be operated with the reclining handles on both sides of the seat. Do make sure to always pull the seat belt tight after changing from one position to the other to avoid slack in the belt.