The Backlight fluoreSHEET emits an orange flourescense when it is illuminated from the front with a blue LED light. To achieve a backlight effect, pair the Backlight fluoreSHEET with a MidOpt Orange Bandpass Filter. The BP590 orange filter is necessary to capture the orange wavelength emitted from the fluroSHEET while blocking the blue LED light source. The fluoreSHEET has adhesive backing, is water repellent, tear-resistant, and flexible. It is available in 3 different sizes.