These headphones are horrible. I bought them as a back up to my Koss P9 headphones and I am completely unhappy with them. The bud is actually physically painful after a whopping 5 minutes. The plastic used to cover the speaker is very flexible, but is only a thin layer over the speaker being shoved into your ear drum. The neck band is not comfortable and sticks out not less than an inch from any position. While the sound is acceptable, the pain caused by the bud completely distracts and annoys me while I try to listen to music. Overall, not only will I never buy these again, I strongly urge who ever does, to try them the second they get them, so that they will still be covered by Amazon's return policy!