Go to the page that shows the product itself, in this case the John Blair Plain Front Slacks. If you scroll down to the bottom of the page where the reviews are shown, you will find three tabs, "Reviews, Q &A, and Size Guide" Click the Size Guide Tab and you will see all of the sizes in a table by scrolling down on that page where you will find that small inseams are 28" and medium inseams are 30".