High-Intensity Prism Reflective Material Highly Reflective Prism Reflective Material * This product has "retroreflective" properties, returning light towards the light source. It has a high reflective brightness that far surpasses glass bead type reflective materials. * Attach it to bicycles, personal belongings, etc., to prevent traffic accidents. * For sticker application, wipe the surface of the item clean of dirt and grime before applying. It will not adhere if there is oil or moisture present.