This fly was originated by Dan Callahan on the North Umpqua River. However the "Green Butt" is proven on all sizes of rivers and a wide range of water temperatures and conditions. It is one of the have-to-have flies no matter where you fish steelhead along the Pacific Rim. We have modernized this classic fly by having it tied with the latest materials on gold colored Alec Jackson Steelhead Iron hooks. Don't worry, this version is thoroughly proven. We've been using Green Butt Skunks on various colors of hooks for years. The ones tied on gold hooks just seem to catch more fish, so we're passing the secret on to you. These flies are Super Premium Quality!