Unlike the front seats, the rear seats were pretty easy to recover. There's no foam to replace, so the new cover was simply put over the OEM padding. TMI's covers are made from 32-ounce vinyl, which is the same as what GM used. Some other brands are made from 28-ounce material, or even vinyl as light as 24 ounces. TMI thinks this is far too thin and won't hold up to use or have the same look as the original stuff.