Webbing does not rot, at least not in your lifetime. You say one of your collars are 4 years old and tested,well let me tell you summat for nowt lol strongstuff May be a tad weird and possibly wired up wrong lol but his collars do not rot, I've had one ten years here and its not rotten, with no maintenance, I've got a few leather ins, cheap pet shop uns and expensive uns, lined and not, and unless only put on for Sunday best not one has come near strongstuffs collars for durability.....
This thread is about leather collars,and your leather collars at that, so no need for strongstuff to be