Great for the price
Verified Buyer Reviewed by cm from mammoth lakes on Saturday, November 8, 2014
They are very small, so their primary purpose is to alert drivers you are there (as opposed to lighting the way). They attach in seconds and are easy to use, but it's hard to tell how long they'll last. No surprise, given the price, the material is not the highest quality. Still, for the price, can't beat them.