Growing up in the 1970s there was a brand of jeans called tough skins
that were supposed to be super tough. In reality they were about a 10 oz cotton plastic blend that scratched the heck out of your knees, because that's where they were super reinforced.
These are the pants, both at age 7 and now, I wished toughskins had the balls to be. Super thick ropy denim, super well built and super comfortable! I'll be putting them to the test on my farm!
I have one other pair of jeans this heavy.....almost nine years old and solid. Not a stitch missing, not even a dent.
These are easily 20 year jeans if you have the time. And at a ridiculously great value.