C&F Design Universal System Case Large

The C&F Design fly boxes are my favorites. Their modular design allows switching the inserts to accommodate flies of different sizes and the foam that holds the hooks is especially fine. The latches are easy to use and the boxes also feature tight seals: on a recent trip I closed a box at ~7,000 ft then drove home to sea level where the difference in air pressure made it harder to open the box - that's pretty air tight. They're built to last, though I haven't run over one of them with a truck to find out just how sturdy they are.