The Layer Perfect is made from clear acrylic for ease when measuring and positioning. It works with all shapes and sizes and is 4mm thick so you can even layer 3D projects.The steel reinforced edges allows you to work with a blade without damaging your Layer Perfect as well as pen or pencil for straight lines.UseMatting and layeringDrawing circles and curvesPositioning gems, buttons, brads, or pearlsUsing the holes to pierce through and create faux stitching SpecificationColour: Green/ClearSize: 230mm x 230mm x 4mmMaterial: Plastic