Snowbee's waterproof Centre Leaf Fly Boxes really do maximise available storage space. The centre leaves are available seperately, so you can keep leaves pre-loaded with your favourite flies and swap over the ones you want for that day's fishing. If you want to store large salmon or saltwater flies, simply remove the centre leaf completely and you have a very deep box, capable of storing the largest of flies. The removable centre swing-leaf, hinges to give easy access to both sides, providing 4-sided fly storage in one box. The large model can store up to 576 flies, while the x-large can take a whopping 936 flies!