This belt case was originally made for holding the plastic ear plug cases as used by ESP and other custom molded ear protection companies but it also can be used to carry most digital cameras, cell phones and blackberry's, or what ever you can also come up with. Inside measurements are  3 1/2" wide by 2 1/2" high by 1" thick. A leather belt loop is sewn to the back to securely hold it to up to a 1 3/4" belt. A simple brass post securely holds the flap down.