What is this seating insert?

[Kevinl7778]

I have found them on ebay and other sites in the past, there is usasully a teady bear in what looks like a 5 point harness.

I think this is similar?

https://www.aliexpress.com/item/UPDATED-2014-Portable-Baby-Child-Car-Safety-Booster-Seat-Cover-Harness-Cushion-Cream-3-colors-free/1428918529.html?s=p

And theres this thread.

Go Go Babz harness and seat

Over the past four years we have used the Go Go Babz folding wagon seat and harness. They are no longer available. We have a workshop on July 14th and need a substitution. Any help or suggestions would be appreciated. Thanks Will