Protecting the seats when using LATCH system anchor points

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2016 Mazda CX-5 GT AWD w/Tech & i-Activesense
So I have 2 year old and another one on the way due in October, hence the reason for getting a new car! When I install the forward facing car seat (Chicco Nextfit) the anchors on the car seat pull up on the rear seat back and deform the seat quite a bit. I've got a seat protector pad under and behind the seat that is wedged in between the anchors and the seat back but I am wondering if anyone has found a solution that helps protect the seat back from deforming. Since the seat will be in the car for quite some time going forward I'd like to find something that relieves the stress on the seat back a little and hopefully doesn't permanently deform the seats.

I've considered these:
https://www.amazon.com/dp/ (commissions earned)
 
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