Intended for drying flies saturated from use. Just place flies with tippets still attached into the container and shake. Water will be sucked from the fly and leave it ready for floatant. Blue indicator crystals turn pink when desiccant needs replacing.
I love Loon products, but I definitely prefer Top Ride or Blue Ribbon for this purpose. I do like that there is an indicator when this profuct no longer dries flies.