Hemingway's flashback foil is a 3-D, shimmering, semi translucent foil that takes on a whole new level of color and gives a new meaning to the term flashback foil. It is literally heads and tails above the rest. Add this beautifully designed product to your favorite nymphs and emergers and let the fish be the judge! Makes an awesome foil back for scuds and czech nymphs!