RIO Products PMD Dry Flies Assortment - PMD is short for Pale Morning Dun. Pale Morning Duns are small mayflies that can range in color from yellowish olive to yellow to a creamy orange. Pale Morning Duns hatch primarily in summer months. This is a very important food for trout and this assortment consists of our best-selling sizes and patterns that represent PMD dries. This assortment includes the following flies: Sparkle Flag – PMD, Size 16 Sparkle Flag – PMD, Size 18 Comparadun – PMD, Size 16 Comparadun – PMD, Size 18 Sparkle Dun – PMD, Size 16 Sparkle Dun – PMD, Size 18 Transitional Dun – PMD, Size 16 Transitional Dun – PMD, Size 18 Parachute – PMD, Size 16 Parachute – PMD, Size 18 Paracripple – PMD, Size 16 Paracripple – PMD, Size 18