FYI, things like jeans can have a lot of size variability between seemingly identical pairs (same brand, model, and nominal size).
My understanding is that this is because the denim is stacked and then die cut in the factory. Since denim is highly deformable, the cut outs from the top of the stack are not the same size as the cut out from the bottom of the stack. And this can lead to considerable size variance within the "same" pairs of pants.
That's why it's a good idea to try on two pairs of the exact "same" pants if the fit is close, but not quite right. YMMV.
My understanding is that this is because the denim is stacked and then die cut in the factory. Since denim is highly deformable, the cut outs from the top of the stack are not the same size as the cut out from the bottom of the stack. And this can lead to considerable size variance within the "same" pairs of pants.
That's why it's a good idea to try on two pairs of the exact "same" pants if the fit is close, but not quite right. YMMV.