Scotchlite™ reflective material Maltese Cross helmet fronts are retroreflective. That means millions of tiny microspheres with a mirror coating on one side reflect light back toward its source to create an intense reflection. That's why it's ideal for marking any hard, smooth surface. Choose red/orange, lime green or silver. Gall's reflective items meet NFPA compliance. "Scotchlite" is a registered trademark of 3M.. Measures 4"H x 4"W.