Lightweight / Low profile slim design; Magnetic quick access open/close; Strong impact resistant shell; Ideal for a wide variety of flies sizes 8-26; Unique storage areas for different flies; Magnetic Fly Dock for small flies and drying or staging flies; Fly Trap - for offset head to tail storage of flies sizes 8-16; Micro Slit - for compact organization of small flies sizes 16-20; Zero memory self-healing silicone; Most secure hold