Summary: I use these to run with, and they work great, except the tips that come with them. The provide four sets, but all of them didn't work for me. Never could get a tight seal, and when I would sweat, they would slip out. I replaced the tips with some others, and now I don't have that problem.
Summary: Good speakers but the controller is too heavy and flops around while running. I should have spent the extra thirty dollars and upgraded to a better model. However this one has good speakers and meets the expectations for the price point.
Summary: First let me say I do like the product. I run daily and do sweat a good bit. The issue I have is that for some reason my right ear piece stays in and the left keeps coming out. Its probably just my left ear is different from my right but when your are going full speed on a treadmill it gets aggravating.
Summary: Great headphones for the active type. I use them while I run and the sound great! Very durable as well. I've taken them in the rain with no problems as well as dropped them, sat on them, and even with all of that, they continue to pump out great quality sound. A little on the pricy side, but I dare you to find any headphones in that price range with the durability and sound quality of these Sonys! My only issue is the color.