Multi sided Fly Box with Removable Swing Leaf Center Waterproof Fly Boxes for Fly Fishing Waterproof fly box: The latch closes firmly, and the gaskets both sides do a pretty good job of keeping out of moisture. They also float in the water and are waterproof so your flies don’t get wet.Made of impact resistant high density ABS plastic. Tough plastic lids make it very durable.Large Capacity: Contains 4 split foam inserts to hold over 500 Flies. Easy to add, remove, and organize your flies. Swing Leaf Center The middle divider of our fly box can be removed,double layer can put large flies, 4 layers can have more capacity.