Decorative Butterflies Pkg (12) Bright, Nylon Butterflies, Madame? Butterflies! Each with a 2-1/2" wingspread. These are nylon, which looks real but is much sturdier than whatever real butterflies are made of, plus these won't fly off your hat or whatever you tie them to with their thin, 8" long wires. Our each is a dozen butterflies in extremely vibrant colors and designs.