Example: Shoppers browsing Calvin Klein jeans will see traditional waist sizes with inseams in inches, such as 12 x 32, while browsing 7 For All Mankind jeans turns up just a single number, i.e.
What this suggests is a natural division of labour: a trouser maker could assemble average-sized khakis in volume in Mexico, but make special sizes such as narrow waists or long inseams in the United States, offering fast turnaround for retailers and less risk of overstocking.