I own this, plus Thermarest Lite seat pads (the ones in PLum or Pomegranate colors). This trail seat is larger, wider, and heavier. It is covered with CLOTH! This absorbs sweat, becomes dirty and dingy rapidly, and serves no useful purpose as it's too thin to be insulating. The non-removable cloth makes this pad hard to wash. I much prefer the smaller, more compact, lighter weight design of the Thermarest Lite seat pad, which is a soft vinyl (hard to describe, but it's not sweaty vinyl) and much more easily cleaned and retains no odor like this unwashable cloth Trail Pad.
In addition, the Lite model rolls so small and fits in my pocket or my wife's purse well; this TrailPad absolutely does not. It's oversized, and heavier, and is not as compact.
So, for me, the Lite wins over the Trail Pad (or the too thick camp pad) in spades.