Loon™ - Zippy Hair StackerLoon Zippy Hair Stacker For helping hair to fall in line Using a hair stacker is the best way to ensure clean, even hair wings and tails on your flies. The Loon Zippy Hair Stacker features a unique one piece hinged design that makes loading, stacking, and removing hair quick and easy without losing separate components. Magnets keep the stacker securely closed during use, while the viewing window in the base allows tyers to easily check tip alignment.