Cases for mounting butterflies, bugs, rocks, fossils or any other three dimensional collectibles. Known as Riker mounts, these are sturdy cardboard boxes appx. 3/4" deep, with glass glued into the front cover for viewing. They are filled with a fairly firm, white, expanded, synthetic, cotton–like material. The cushiony filler holds the three–dimensional viewee in place without pins or glue. Very handy for the proud trophy hunter. Our smaller is 8” x 12” and the larger 12” x 16–1/2”.