Length of Each fly: Approx. 0.79inch/2cm. Weight of Each fly: Approx. 0.003oz/0.1g. 12pcs Floating Dry Fly Fishing Flies Set Butterfly Like. They float to the surface and land gently just like flies. Handmade by professionals with barbed Hooks. They would work better in a river a slow moving River, and suitable for bass panfish bluegill and trout. Vivid Color can attract more fish. Brightly colored flies make your fishing trip easier and more fun. The feathers on the fly hook can better slowly land on the water and float on it. This imitates insects and attracts fish to the hook better, so pay special attention to storing them in a dry place to prevent getting wet. Note: Cause the feathers on the fly hook can better slowly land on the water and float on it. This imitates insects and attracts fish to the hook better, so pay special attention to storing them in a dry place to prevent getting wet.