These Loon Outdoors Rigging Foams are a great addition to any fisherman's tool pack. They are made of a sturdy, reusable foam housing for riggs using multiple nymphs, dry dropper set ups, maybe a tapered leader with a dry fly. You name it, prepare it ahead of time and you can have it all at your disposal on these handy little gems. They allow fisherman to make quick changes on the water, keeping all their favorites at their fingertips.