Umpqua Dual Essential Foam Fly BoxA double sided version of our ever popular Essential model, this large, slim foam box will help you maximize capacity of your standard nymphs and dry flies. For anglers who want to have every variation of every size of their favorite flies the Double Essential Large Fly Box offers maximum organization and maximum capacity. A workhorse of a fly box in a slim package that securely holds all your favorite dries and nymphs from size 22 8.