Just fold the chair up, put it away, and wait about 10 years. By that time, your butt will probably have sagged enough to fit the chair seat.
Maybe not Dougs still skinny Grandpa arse. My butt has grown with age to fill even big boy folding camp chairs. I do not mind the lowered seat sag as much as the personal extraction difficulties from that stretched out nylon fabric butt cup.
Inexpensive big-box folding camp chairs, all designed much the same, suffer from several construction and material defects. Namely:
Nylon fabric, which stretches and sags.
Four poorly reinforced plastic corners that suspend the seat pan, which wear out and cause even more sag.
No side rails and sleeves to hold the seat pan stretched laterally flat.
Cheap, poorly executed stitching.
Weak 3 16 ths inch pop rivet connections on the folding leg connections.
Especially the flimsy pop rivet at the front of the folding leg X that takes most of the sheer forces. Once the seat pan has worn down the crappy corner reinforcements to produce a deep slung depression the easiest way to extract oneself from the now suspended seat is to lever upwards using the front of the arm rests. Which exerts undue sheer forces on that front pop rivet.
That levering force produces eventual bent & wanked death on that critical front pop rivet. I replace that flimsy pop rivet with a 3 16 th or quarter inch bolt, washer and nut, and carry spares for companions failed chairs. (In a pinch a bent nail or tent stake, duct taped in place, will suffice)
But the nylon seat fabric still sags overtime, and the corner reinforcements still wear out and make the seat sag even worse, in a nightmare of planned obsolescence.
The ALPS chair is heavy, and not portage friendly. And it is slightly wider when folded and stored in the carry bag than a standard big box folding camp chair. But it is ruggedly constructed with
polyester fabric, sleeved taut inside aluminum side rails, and well stitched. The design shows no sign of sag or wear and has already lasted longer than the big box junk.
For my no-portage, big boy, high-volume solo canoe applications, and other tripping truck and base camping uses, that ALPS chair does the job.
Having suffered catastrophic and un-repairable chair failures mid trip I will happily accept the ALPS size and weight. Sitting on a log or a rock just does not cut it for the remainder of a trip, and I will pay the weight penalty for some never-fail solution.
Plus I could not get out of a 4 inch high butterfly chair, legs and ankles unhappily displayed in ground hugging stable fly proximity, without a chain hoist.