Wondergel/airhawk

The airhawk is well worth the $$$ imho. It was developed for people that are confined to wheelchairs and works great. I have a few different sizes that I use on my motorcycle for cross country trips. My personal record is 36 hours non-stop "seat time" on 1 & never got sore or uncomfortable. The trick is to adjust the air in it properly otherwise it will do you no good. Simple fill it up all the way and sit on it, then open the value and release air slowly until you just start to feel the motorcycle or truck seat. It does take a little bit of getting used too on a bike for a few reasons, 1 you sit higher on the bike and #2 you don't feel as "planted" to the bike seat. (not sure how to explain that, it feels squishy or like sitting on a bowl of jello)

As far as for use in the truck, I thought about it but never felt the need for it yet.