The answer to this question can really vary depending on the child and the reason they are unfastening or pushing down the chest clip.
Most commonly, it's going to be either exploration related or comfort-related. If your child is verbal for their age, you can try asking them why they are playing with it. In either case, here are a few suggestions which may help you and your little one:
- We recommend checking that the harness is adjusted to the right height for the direction the seat is installed and that it isn't over-tightened. The straps should be snug across the thighs, the chest clip at armpit level, and the straps tightened so that you cannot pinch a horizontal fold in the strap at your child's collarbone.
- Please visit the following link for a video that demonstrates a properly adjusted harness.
- If it's more exploration-based, then "busy" types of activities for car trips might help. Choosing a variety of soft toys that they get only in the car and have things like buttons and zippers will help some kids.
- Some parents have found success with using the "pointy" side of a velcro strip and placing it on the outside of the chest clip. For some kids, the prickly sensation deters them from playing with the clip.
- For especially tricky kiddos, the Houdini trick as described here can help limit their access to the clip.
For further assistance, please reach out to firstname.lastname@example.org with photos of your child buckled into their seat and our Customer Support team may be able to offer additional suggestions.