Sea Run Large Fly Box Black. This simple fly box from Sea Run Cases will fit up to 30 flies. With a single snap enclosure to secure the lid. The Interior bottom is finished with high-density foam with prefabricated cuts to fit the hook of the fly. Specifications for Sea Run Large Fly Box: Manufacturer: Sea Run Color: Black Features of Sea Run Large Fly Box It fits 20 to 30 flies Single snap enclosure Fits inside all Sea Run Cases Flies not included Package Contents: Sea Run Large Fly Box Sea Run 5019FBL/6203: Large Fly Box Black