I picked up this one earlier this year on Amazon and really like it.

$35 bench seat cover

It looks like if you go any cheaper it's really not worth it.

I got this pet seat cover to use with my three messy little kids :-) it’s a great value for the money. First day I had it on, my daughter spilled a hot cocoa, and it just wiped right off. Crumbs, etc. come off no problem.

Also, for parents out there, it allows access to all seatbelts and latch system.

https://imgur.com/a/0lb3bs3/

Here is the Amazon link:

VIEWPETS Bench Car Seat Cover... https://www.amazon.com/dp/B07BTG3DX9?ref=ppx_pop_mob_ap_share