redthies
Renaissance Redneck
I have Wet Okoles. Not sure they are the toughest out there, but really the only ones I liked due to their near factory fit. They are neoprene by the way. I use diving suit shampoo to clean mine up every now and then.
I ran these for 8 years in my '01 Taco dbl cab. They are awesome! I'm getting some for my 3500 soon. They now have heated covers as well!