7-mil, enclosed lens, retroreflective, engineered grade films that offer flexible and versatility; Available in 11 colors, including black (which reflects white); Similar daytime and nighttime appearance that retains most of this reflectivity when wet; Excellent angularity; Pressure-activated adhesive for easy sliding and tacking; Removable with heat; For vertical, flat, curved or corrugated surfaces, with or without rivets; Air release channels for fast and easy, bubble-free graphic installationInformation provided by 3M |