XLG TAGS YLW 476-500, DuFlex Extra Large Tags are molded from custom-formulated, high-grade polyurethane, are flexible, rugged, lightweight and reliable in harsh weather conditions. DuFlex Visual Identification Panel Tags are available in blank or numbered sets of 25 in a variety of bright, fade-resistant colors. Marked with Dark & Durable marking technology, which starts with an initial indestructible Lasermark and is then overlaid with black ink that penetrates into the tag to offer bold, black numbers.