This Polka Dots Silicone Onlay by Marvelous Molds is the perfect tool for creating raised, 3D polka dot patterns for cake decorating or any arts & crafts project. Onlays also known as 3D stencil are a great alternatives to stencils as it hold the polka dot patterns in its structure so the entire onlay can be lifted vertically and then applied to a surface. Polka Dots Silicone Onlay is made from a flexible, food grade silicone instead of rigid laser-cut plastic. Polka Dots Silicone Onlay measures approximately 15.9cm (6.25") L x 10.2cm (4") W.