Originally Posted by treasurehoard
Unlikely that it has anything to do with sizing down. As I said above the crotch of any pair will get a lot of wear. Sooner or later it will get worn out and need to be patched.
Also for the record in those 1st fit picks it looks like he could have went down at least 1 more size if he wanted. The jeans are bagged up behind his knees. Sizing down is not a terrible idea ... my nudies were pretty tight to start and then bagged out. After a few years of regular wear they finally got a hole in the back of the crotch.
I'll point out a couple of differences here:
Yours were straight svens, right? Those are naturally a more relaxed cut than a slim jim. You also wore yours for a couple of years before experiencing a crotch hole...where as the OP has only had his slim jims for a little less than 7 months. Finally: Your hole was something small...these suffered a near catastrophic failure.
There's a difference between crotch holes that occur from normal wear and tear, and crotch rips that come from sizing down too much. This is a case of the latter.
I know in the past I've said that sizing down in general is a very bad idea. I'm going to rescind and revise that theory: I believe that sizing down on naturally slim cuts can
be a very bad idea, depending on the person.
Waistbands are structurally very strong, with the only weak point being the button. If anything on the waistband is going to fail, that'll be it. Everything below that is only a single layer of denim that is stitched to a single layer of denim, though. If it's put under enough pressure for a long enough period of time, it'll typically tear in a nice, neat line along the stitches. I could get dozens of pictures from mynudies to illustrate this...but the OP's pictures suit the purpose here very well.
The straight sven, and regular alf, and the average joe are all forgiving enough in the upper thigh and top block to allow the user to size down for a slimmer fit, this is true. But the Slim Jim naturally has a very narrow top block to start with: that's why there are so many stories of crotch rips from people with slim jims who sized down. A guy who's got really skinny thighs can get away with it, but a guy with normal-sized or large thighs is just tempting fate.
I can imagine that the higher-end brands that use stronger construction methods and stronger denim don't suffer from the same issues quite as much as nudies. But a person should
be able to get at least a couple of years of regular wear out of their nudies before something like this happens.