William Gibson's Zero History goes into a bit of detail on this, including a mission to track down a supposedly secret brand of jeans.
The makers of the Rickson's have exaggerated this, but only very slightly, and done a hundred other things, tiny things, as well, so that their product has become, in some very Japanese way, the result of an act of worship. It is an imitation more real somehow than that which it emulates.
Something definitely caught Gibson's eye about Japan and imitative fashion, though I don't have the first-hand experience to see how accurate his take is. It definitely describes a trait I've seen in other replicas and exports, though; Japanese whiskey is an obvious example.
I'm not inclined in any way to follow fashion but I was really taken with Gibson's attention to detail in these books. He has a way of imparting curiosity about the seemingly mundane and I have started to pay attention to similar traits in clothing.
That's a whole article about the art of mud-ball shining, and it's fascinating.
(It's also an intriguing taste of how Gibson got started on his last decade of topics. Otaku, crafting perfectionism, "the absolute narrowing of personal bandwidth", and so on.)