I didn't think you could wear out a pair of Herman Survivors, I can't tell you how many years I had on mine and they were still servicable when I swotched to a lighter insulated water proof boot. I hope they are still making them as well as they did in the 70's when I bought mine. Mostly, we seasoned citizens use what works and is servicable, no sense replacing what doesn;t need replaced just because it is there. That is not to say we do not use new devices such as range finders but we don't discard what still works. Of course many times the newer bunch uses gadgets and gizmos to replace experience and skill we older folks had to learn.