Orvis Customer Favorite -Dave's Oh-So-Iso

Isonychias or Slate Drakes can be very reliable hatches during the mid to late season. Dave's Oh-So-Iso drake fly is an easy-to-see pattern that sits down in the film and can be very productive when you find yourself with these gray-winged mayflies on the water. In natural.

Sizes: 12, 14.

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