Hi Lisa, Thank you for your enquiry. The answer is No, this booster does not have the option of adding a 5 point harness. There are other options in the Recaro range that has a 5 point harness however it depends on your child’s height and weight. We would be happy to advise you of these options by contacting your nearest Baby On The Move store https://www.babyonthemove.co.nz/store-locations/. We hope that helps with your query.