An ideal choice for organizing small to mid-size flies. The boxes are a well designed compact size measuring 4 5/8"x 3 1/2" x 3/4". Molded from a high-density plastic with a metal hinge pin, the boxes are lightweight and will last for years. Interlocking feet molded onto the bottom allow the boxes to be connected to one another. Positive snap closing lids stay shut and keep even the smallest flies in their proper compartment. To protect against loss, a lanyard loop attachment is incorporated into each box.