The Butterfly sign shows a variety of this beautifully delicate insect. Since it's made from a rust resistant aluminum, the Butterfly sign is weather resistant and can be displayed inside or outside. This will be a wonderful gift for anyone who loves these pretty creatures. Gardeners will adore having the Butterfly crossing guard sign in their yard to promote these beneficial pollinators. The butterfly warning sign is easy to mount, as it features a predrilled hole. Each one measures about 12 x 12 inches.