The Micro 75mm. Polar Gamechanger is Similar to Blaine Chocklett's The Polar Changer is a highly articulated, impressionistic baitfish streamer used to target many freshwater and saltwater fish. The fly is tied predominantly with “Polar Fiber” which is a sensitive, ultra-lightweight synthetic fiber that causes the fly to constantly “breathe” and undulate in the water. This “movement-without-movement” creates the impression of a live baitfish that is always moving, even between strips or when suspending in the water column.