headphones fall out a lot! mainly during flip turns. I tried to get another pair to match the overboard armband for my ipod, so far unsuccessful.

I used them once and after only 1/2 hour in the pool one ear phone got water logged and the sound became fuzzy.

I purchased these headphones with the intent of using them as I swim laps at a moderately fast speed. These are NOT what you should be using for swimming laps. It does not specify on the package or in the product description what the intended use for this product should be. If you are planning on using these for any stationary activity, I strongly recommend  this product. They feel very comfortable and, while you may have to turn up your MP3 device a little more than usual, the sound quality cannot be matched. It is unfortunate that I cannot use these for swimming laps, but I will certainly use them for all other aquatic activities where I wouldn't be able to use regular headphones.

I like them a lot.  They work well so far!

Sound from these headphone are like listening in a tunnel. Not to sure how sweatproof these are? They fail to stay secure in the ear while running.