Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not for runners

I would give them 0 stars of that was an option. I am a serious runner and marathoner. I decided to splurge for the more expensive "sweat resistant" Skylon metal headphones. The first pair broke in less than a week. I bought a second pair. I wish they would break as well. Their weight makes them unusable for any rigorous workout. They might be ok if you jog slowly or walk, but not if you run. don't waste the money. Nike can (and should) do better.