Respro Hi-Viz Black Diamond Reflective Stickers

[fossyant]

This stuff is pretty good, black, but when light is shone on it, bingo.

I'll let these two photo's do the talking - Taken in daylight (overcast) one without flash, one with.

Just short of £12 for an A4 sheet from here.....

http://www.beseenonabike.com/shopuk/product_info.php?cPath=33_42&products_id=152