from the product description
Will be shipped unwashed, MEASUREMENTS GIVEN HERE ARE PRE-SHRINK
Amount of shrinkage will depend on how hot and vigorously jeans are washed, on 40 degree C wash you can expect approximately 1" shrinkage on waist, up to 2" shrinkage on inseam. All dimensions will shrink proportionately to the waist and inseam, those that are put under pressure will have a tendency to stretch back out, those that aren’t will not.
I dont know how i didn't see that, as I've been staring at the product page for about a day and a half now, but thank you for pointing it out.