Others say...

"very comfortable"
These headphones are very comfortable. I find them somewhat hard to put on. I have had some problems with the ear piece coming off.

"Amazing deal for an amazing product"
A little background on me, I'm a person who rarely ever buys headphones; I try to get the free ones that came with my ipod, computer, etc. and usually these are earbuds. I recently heard earbuds are bad for your ears, and also my earbuds kept breaking. I believe i had 6 pairs die on me in the past year (all free, of course, but including the ipod speakers). I purchased these headphones to replace them, mainly because of the lifetime warranty. Let me tell you, as soon as they came out of the package I was impressed. Incredibly low price and what you get is speakers that boom. While they of course don't have the incredible bass you can find in expensive speakers, I use these to work out and walk around my college campus and they have never fallen off. They also reduce ambient sound in the gym, which allows me to listen to them at a comfortable volume but I can still hear the bass booming (very helpful when running). Speaking of comfortable, I sometimes forget I'm wearing the headphones because they are so comfortable and look around for the music only to realize... Anyways, as for the negatives the clips do pop off very easily; I found putting a little duck tape over it will stop the clips from popping off. Unfortunately, I did lose one clip, and I called Koss and guess what? Sent me a new clip to my house for free. Will buy from Koss again; great customer service, great product, cheap price.

"Not worth the money"
Purchased these from Radio Shack on clearance for $5.99. I thought "what the heck". Flimsy, difficult to put on and very average sound. Used with my Creative Zen vision M and was not impressed at all. My Skull candy 'Inked earbuds are 10 times better.

"Poor Quality Earphones"
I purchased this set after reading the excellent reviews here on Amazon. After about a week, the right unit developed a crackle/buzzing that is absolutely unbearable, and within a month the left speaker suffered the same fate. I generally listen to original film scores and "classical" music, both of which are often subtle, and the crackle absolutely ruins the music. One would assume it would only occur with low frequency sound, but this isn't the case. Blasting brass and even piano sonatas can result in the same unremitting buzz at modest volumes (I enjoy my hearing, so I never turn the volume very high). I will send in for another pair when I return to the country, but these are not worth the price. If sound quality is a priority for you (as it is for me), ear buds and these clip on sets will not suffice, so endure the awkward glances and get a set of full-size headphones (many collapsible models are made for transport).

"Comfy listening"
Love these litle headphones. The ear buds make my ears hurt after a short while, and they tend to fall out, but these earphones are great: good sound, lightweight, and very comfortable. I just ordered my second pair--my daughter absconded with the first one. They've held up too; I once accidentally yanked on one and it came apart. I thought it was a goner until I realized it would just sanp back together. That's engineering I can believe in.