Are you refering to the way in which you attach the Buckle.

My kilt belt has a fast loop of metal that a hook on the buckle fastens to.
The belt length can be adjusted by the thinner strap and a buckle on the iback of the belt.

I have seen velco types too. I'm of the opinion that maybe velco had been a better way to go. That said I havn't discovered any wear to the kilt as yet because of the little buckle

Hope this is of some help....David