Bests & Worsts Reviews from Amazon

I have now purchased 7 pairs of these headphones. They are fantastic for running (or anything that gets you sweating) because they don't allow sweat to accumulate in your ear the way plastic in ear buds do. They have a good sound for what they are and allow you to still hear what's going on around you, to a degree. If I'm running, I want to be able to hear sirens, horns, someone yelling that they are passing me, or a dog getting ready to shred me to pieces. So why 2 stars on such a fantastic running headphone? Because the wires constantly break down at the jack connection. as the wire moves around from your body moving, one of the two earphone wires eventually breaks down and you are left with one earphone. Not the worst thing in the world, except for one huge side effect. On most phone devices, when a wire is bad on a headphone, especially broken, the device reads the jack as either being lose or not in at all. So this will randomly shut off all sound to the headphones. I've used many different style headphones on a daily basis for work and training and these have the highest rate of failure at the jack connection. There is a lifetime warranty with Koss, however it will cost you $9, plus the cost to ship the headphones. So at $15 from Amazon, you are really only saving a couple bucks, but have to deal with the time of waiting for Koss to receive, process the return, and ship out another set. My suggestion is get a couple pairs and return when it breaks and use the back up. I return 3 at a time to save me on the shipping. If it wasn't for the faulty wiring and connection, this would be a superb 5 star product that should be owned by every runner, or active person.