To make these letters we use 1/4in black glossy acrylic. To make the letters more visible we can use white acrylic instead. This option is $20.00 extra ($170.00/set). Also we can apply reflective vinyl on the letter top to make it even brighter. Letter sides will stay the acrylic original colour (black or white). Reflective finish is $50.00 extra. So white acrylic letters with reflective vinyl are $220/set. Reflective vinyl is available in different colours, even in black, but light reflective vinyl gives much more reflective effect (comparing to dark reflective vinyl).