Slimline design fly boxes, made from tough ABS plastic, with a clear lid for quick and easy fly identification. Fitted with the latest high-density silicone foam, which gives a constant firm grip, with no 'stretching' over time and will not damage with repeated hook insertion and removal. The unique, staggered foam slits hold all dry flies and nymphs firmly and the slim profile is ideal to slip into a shirt or vest pocket, when 'fishing light'.