Lightweight / Low profile slim design; Magnetic quick access open/close; Strong impact resistant shell; Most compact and user-friendly storage for flies 8-22; FlyTrap for offset storage without head/tail overlap; Angled entry points for easy load of flies; Maximizes capacity and organization; Deep gutters to protect and preserve fully hackled flies; Improved hold / Quick loading; Lightweight - 25% lighter than Silicone counterparts