The Umpqua Boat Box offers the perfect solution for big fly storage. Each box features slotted foam internally on the top and bottom lid, and unlike other box's on the market, one external slotted foam sheet for easy drying, organizing or quick access while behind the oars. The thick durable foam features fly placement guides to easily identify where the slots are located. External dimensions: Magnum: 16.5” x 12” x 4.5” Ultimate: 13” x 10” x 3.5” Baby: 10” x 8” x 3”