I wanted something light and small to use with my large S2S mattress. I bought the larger chair and all fits well. It's very light, yet seems able to take my weight when properly relaxed. Despite a thicker base material, I have a sit mat as insurance against anything on the ground damaging my sleep mat. You do need to air the mat down to fit - as it folds it loses volume and there's a definite sweet spot in terms of ideal air volume.
If you want compact and light, then short of £160 or whatever on the latest featherweight chair, then this is it - and half the weight and much smaller. OK a chair is higher up, but to be fair this is pretty comfortable and no mesh backing draughts on a cooler evening.