Further thought on the domed hat

When I first examined low-res images of the Mede domed hat, I believed that the hat was bound around the outside.  However, having continued to examine the high-res images at Nirupars (such as the first and second images on this page) I'm forced to concede that the band is internal.  Possibly the edge of the hat was folded in and stitched down over it, but an easier method might be to sew small patches to the inside (like belt loops).  Either way, the band then passes through a hole in the back and is tied into a slipknot on the outside.