LED rear light for rider?

[calamari]

So i'm driving at 7pm on the freeway (dark already) and I see this motorcycle passing cars two lanes on the left... then I see that this guy has some sort of LED light stick on the back and bottom on his backpack. The light was mostly pointing downwards, but it did help a lot with visibility.
I know it wasnt mounted on the bike itself, and between that and the rear red light, he was very visible at night.

Anyone knows about this and where to get it?

[lowcountrygs]

Check out bicycle shops they carry clip on battery led flashers I think that is what you saw.

[GeeP]

Ahh...  For a second there I thought you wanted a red LED reading light so you could read while riding after dark.   

[calamari]

lmao, kk... corrected the title