3M Scotchlite 680 series Black Reflective sheet - reflects light in the dark

Excellent angularity
Pressure-activated adhesive for easy sliding and tacking
Permanent
For vertical, flat, curved or corrugated surfaces, with or without rivets
Up to 9 year durability.
This 7-mil, enclosed lens, retroreflective, engineer grade film offers flexibility and versatility. It has a similar daytime and nighttime appearance that retains most of its reflectivity when wet.
Reference source from 3M
www.3m.com/3M/...