Does this seat have the anti-submarine safety feature to stop the child slipping below the lap belt upon impact?

Hi Rachel, Thank you for your enquiry. The Nania I-Max has not been officially tested for anti-submarine safety features, however the design of the seat does have a slight dip at the back to assist as a child anti slip feature. This particular seat is currently out of stock. If you follow the link https://www.babyonthemove.co.nz/store-locations/ this will take you to our online store finder where you can find contact details for your nearest Baby On The Move Store. Here, one of out expert Car Restraint Technicians can assist in helping you find the right car seat for you and your child. We hope this has helped with your query.