Jules, I think you have a few of the washes that are notorious for splitting.
I think that darker pair is Antwerp, the chain ones are Fiji, and you also have Nakitas, right?

Those are three (pretty) washes that people complain about wearing out very fast.

Other washes should not be the same as those. However, a 200.00 pair of jeans should not split when a pair of cheap jeans doesn't typically do that... Sorry you have had bad luck thus far.

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