Umpqua Shimazaki Dry Shake - Shimazaki Dry Shake is a desiccant as well as a water-repellent powder. Put the fly in Shimazaki Dry Shake and shake it vigorously for several times. The fly becomes thoroughly water repellent to the tip of hackle fiber and sits on the surface film exactly as a natural insect does. Your fly wouldn't sink! This is a must have floatant for all fly anglers. 25 grams.