Question for those with clazzios seat covers

I have the light grey interior...it was the only option when they were locating my car...totally regret accepting this car but my previous car probably wouldn't have lasted another day... I've already got marks all over my drivers seat and am really considering getting clazzzios...

My main issue that I'm worried about is will I feel a difference in the seat? I already feel like I sit too high in the car and I don't want to add to the thickness. I know they aren't very thick but even a small amount can make a world of a difference. Any comments on this?

Anyone live near Northern Indiana that has these that would let me sit in their car?? (totally serious)

Thanks!