A lean, light and logical fly box design. I have used these boxes since 1996, and can honestly say that they are the best and most practical boxes I’ve ever used. Both salmologic boxes are light - but tough as nails. They are slim, which means that you can pack a couple of these sweet little things without looking like someone packing a carton of milk in his chest-pocket. Best of all, they are NOT watertight – which means that your flies can dry out after a soaking, thus minimizing corrosion spreading to your other flies, as would happen in a sealed watertight box. It’s not rocket science – it’s just logic.