This set of two impression mats can be used to create either tree bark or a brick wall in the medium of your choice fondant, gum paste, marzipan or modeling chocolate. The embossers are made by FMM of England by a durable but flexible plastic. They are approximately 5-3/4 x 2-1/4 ( 150 x 70mm) and can by used to repeat the design over a large area to create your desired design.