According to ShieldMark, its new and improved Mighty Glow glow-in-the-dark flooring tape is three times brighter than its previous version. The tape is available in two-inch and four-inch wide widths and has a luminescent ½-inch centre-line. The luminescent material is charged by normal lighting and will glow in the dark if it receives enough lighting before a power failure. Its yellow colour creates a contrasting border with most floor colours and the glow-in-the-dark stripe will expose aisle ways during lights out power failures, ShieldMark says. The tape sticks quickly, but does not leave a residue if removed.