Day-Night Visibility Barricade Tape "Caution" Yellow 3" x 1000' (Non Adhesive) 2 mil Brand New Technology — Day/Night Visibility Barricade Tape is formulated with an exclusive nighttime visibility (NV) silver ink that is combined with a co-extruded polyethylene to provide a cost-effective and disposable solution to your nighttime needs. In the dark, when a beam of light is directed at the legend, light bounces back towards the source for enhanced nighttime visibility.