King Cab Rear Floor Liner?

Ok, so I have been up and down the internet and forums looking for pictures or recommendations for a non-carpet floor liner for the rear of my 2012 king cab. I don't have underseat storage and would like the liner to cover the extent of the floor area when seat is up, not just where the feet would hit while sitting. However, seems all I find are slim trays or stuff for crew cab. Weathertech doesn't even list a rear liner for the king cab as that is what I am putting up front. Closest I came was a picture of the husky liners that looked to cover, but it was crew cab, so will they be to big for the king, since pic of king cab specific one looks to be slim?
Reason being is my seats will never be down as my two older dogs prefer the floor and my rear seat stays fur free for when I have two legged passengers.

Thanks!

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