I picked up this one earlier this year on Amazon and really like it.
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.
Here is the Amazon link:
VIEWPETS Bench Car Seat Cover... https://www.amazon.com/dp/B07BTG3DX9?ref=ppx_pop_mob_ap_share