We actually used this thing as a mattress for car camping a couple of times before I got to take it out to the boulders. After a couple of sessions at Coal Creek, where the landings are typically less than ideal, I was sold. This thing is huge, and easily covers over a large area at the base of any boulder. It’s also thick enough to smooth out some pretty rough landings, which is nice to know when you are 12 feet above your pad in talus field. The main benefit of this thing is that the pad is HUGE, which of course is also the main downside. It takes up a lot of space in the back of our Subaru, you might have a difficult time fitting it and your climbing buddies into the same car. It also takes up a lot of space at our house, but if you are doing the dirt bag thing, you could use it as a mattress to solve that problem. In terms of bouldering comfort and safety, this thing is tough to beat.