The Montana Fly Company (MFC) has combined their original MFC Wing Material with the innovative Ethafoam to create a more realistic looking, durable and higher-floating material called Etha-Wing. Etha-Wing is an exceptional material for creating Mayfly, Caddis, Hopper and Stonefly wings. The Montana Fly Company (MFC) has combined their original MFC Wing Material with the innovative Ethafoam to create a more realistic looking, durable and higher-floating material called Etha-Wing. Etha-Wing is an exceptional material for creating Mayf