I checked out seat covers for my new truck and what appeared to be one of the best was WET OKALE. These are custom made for your truck and you have many color/design options. They are made out of the same material as wetsuits and covered in nylon. They fit like original seat material and I strongly recommend them. When you check it out, make sure you go to their website and not a reseller and also order free samples as the online colors are not accurate.
Wet Okales are fine if you like neoprene and the ultimate protection. They can be hot and not everyone likes the feel. They are great if you get in your truck wet a lot which I rarely do except for my once every 5 years fall off the boat in to the lake.