I have sizes large and medium. Both are 21.5" long. They are worn at the 'fashion waist,' where trousers or shorts would normally be worn.

The waistband is actually one of the better selling points, as it has a light fleece lining and a very flat profile. If the Mtn kilt is the right size, there's minimal bunching and binding under waist belts of packs or bags.

Hope that helps!

-G