Fons & porter-multi purpose pressing sheets can be used to protect pressing or work surfaces, or over a project to prevent any fusible from getting to the iron.Non-stick, heat resistant sheets should be used with a dry iron.Set heat according to fusible product instructions.Heat will penetrate pressing sheet.Use only on an ironing board or protected work surface.Do not use on a cutting mat or any other heat sensitive surface.Sheet measure: 11 x 17.