Fireflys LED Wheel Valve Stem Lights - Set of 2 (BLUE)

I love these on our bikes~

Absolute crap, they don't even work, do not buy them. Threw them in the trash.

These are awesome. Not sure why the other person's didn't work. Perhaps they didn't take the small piece of paper out that blocks the battery contacts? Not sure. My kids love them and they have been going for over 6 months on the same batteries!