are the fabric pieces that are on the exterior in fact any appropriate number of layers may be used in a given embodiment the fabric layers are stitched together using a performance stitching the fabric layers are stitched together using a performance straight stitch with reverse stitching to bond together all ends and corners straight stitch is used to give a clean smooth look on all edges preferably the thread is polyester mono filament the sign cover 200 is made to be about the same dimensions as the board over which it is intended to be installed the sign cover 200 is made so that it fits tightly over the board taking advantage of the flexibility of the fabric after installation the fabric of the cover is stretched somewhat but there is some elasticity left so that a human may pinch the fabric and perceive at least some stretchiness the goal of the installation is to have a tight fit with no wrinkles or bagginess to give the appearance of the original board assuming the cover is installed correctly during installation edge caps may be placed on the board preferably the edge caps are already on the board from the original board when installing over the edge caps the edge caps keep the material taunt and create a slight gap between the cover and the board this helps cover any damage that may have incurred to the original.