The Bivisible is a classic dry fly that was created by Edward Hewitt in 1926 in his book, "Telling on the Trout". Mr. Hewitt states: "Dark colors are more visible to the trout from below than light colors, and, therefore, take more fish under most conditions and are more generally used. They are often, however, more difficult to see on the water than the lighter flies. This is the reason for my favorite design of fly which I call the BiVisible which consists of a palmer-tied brown hackle on the head of which is wound a small wisp of white hackle. The white resting against the brown becomes very visible in most lights to the angler; on the other hand, the trout see the brown hackle from below better than any other color used. This fly is by far the best of any I have yet seen for all species of trout and it is based on a sound physical principle." Tied in multiple sizes on a barbed hook.