This stencil is designed to be used on cookies, but can also used to stencil the sides of cakes, as well as cupcake tops. Use stencil on fondant or royal icing covered surfaces. Spread thinned royal icing or use an airbrush over the stencil to create pattern. Stencil is flexible and made of 5 mil food safe plastic. Design measures 3" diameter outside, 1⅞" diameter inside.