Mutual Industries 14994-27-18 Standard Vinyl Highway Safety Traffic Warning Flag, 18" x 18" x 27" (Pack of 10) Go to amazon.com Related posts Top 10 warning flag FeatureIdeal for roadside construction signs and for directing trafficOpen Mesh flagsReinforced Vinyl DescriptionHeavy-duty vinyl coated nylon safety flag with a hi-gloss yellow reflective binding and diagonal stripe for extra nighttime visibility.