Comments about Therm-a-rest Field Chair 20:

This seat is a must have for minimalist camping. It easily supports the back and the inflatable matress insert makes it 15X more comfortable than a Crazy Creek style chair. Inserting the mat is relatively easy, and it easily rolls up into a little stick.

Due to sitting on an inflatable mattress, I'd advise using a sheet of visqueen to protect the chair.

The only con I have is the initial setup of the side tension straps. You have to weave them yourself, and its not easy. However, after initial setup, you never have to do it again.