These leather extensions are great to make inserts on the side of any vest that has side laces, on this on the size is 3 inches in width slimming down to 2½ inch on the bottom with a 15 inch length. This accessory comes with metal eyeleds and its own leather laces that you can lace up with your vest. This can come in handy when you need to upgrade the size on a vest so you can layer up or put over a leather jacket.