Double Sided Silicon Lined Waterproof Fly Boxes have individual hook slits to keep your flies dry and organized.
Silicon lining is self healing unlike foam you don't chew it up with minimal use. The tough silicon has hook slits in it so each fly gets it's own slot.
Each box has two sides, solid latches, and a rubber gasket to keep the boxes waterproof.
The silicon lining is very much like one of our favorite Tacky Boxes.