Child Booster Seats in the Back??

I use this one for my son who is 6 and its permanently installed behind the passenger seat with the latch points.
https://www.amazon.com/gp/product/B08588JCY8/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

My wife is 5'4" and with everyone in the car we fit comfortably for 30-45 minute trips. The main issue isn't leg room, its that his legs aren't long enough for his feet to fit under the front seat so that means if the front seat is too far back it forces his feet sideways if that makes sense.
 
Can confirm that they work great. My daughter is five and begs to take the mini every time we go somewhere. She usually uses a booster with a back, but the backless works too.
 
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