Our extra-large double-sided fly box makes it easy to carry a full inventory of flies. Large streamers securely fit in the unique foam slits, this prevents damage to the foam when removing flies. The transparent high-impact plastic lids allows a clear view for quick fly selection. A positive snap lock closure seals a rubber o-ring gasket for secure water-resistant fly protection. Sturdy stainless steel hinge pins will not wear out like plastic pins.