This is standard seat construction. The only time I had a little trouble was because I gained weight and the pair was made of particularly light weight fabric. Was easily let out in the seat by my tailor. Never had a failure of the stitching.
All fair points, thanks everyone. It's a bit disheartening that multiple consignment shop owners told me they won't accept these pants because they look "low quality." Anyways, they are a size 32. If anyone wants these for dirt cheap ($25+shipping), PM me.
Is Osh Kosh B'Gosh an SF affiliate? I have some frayed Fire Engine jammys circa 1981 that have not only been losing value for years (still outperformed NASDAQ index though) but are super itchy and spontaneously catch fire even on barely warm days. I knew they were subpar even when I was 6 but Mom never listened. I'd like to make this publicly known.