Very comfortable stretchy material. Pouch is held in place with plastic snaps which have just the right amount of holding power. Making the pouch exceedingly easy to unsnap/snap. No struggling like sometimes with metal snaps. The pouch fits me just fine but may not be adequate for a big package. Underneath, a built-in fabric layer with an slightly elastic C-ring opening allows me to wear all day/night without any discomfort.