Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

first the acting was so so so bad the movie, this is what i have to say ?but they get E for effort.
Negative

Does a great job highly visible. Works well with the different fencers that I use in the different pastures. Last a long time. Can't beat it for the price.
Positive

These probably work great for some people, but they didn't for me. None of the three sizes gave me just the right fit and I ended up going back to the factory gel that came with the device.

Negative