Summary: I was trying to find a safe way to listen to music while cycling. I needed headphones that I could count on not to fall out of my ears, that would give reasonable sound quality, but most importantly not block out the sound of approaching traffic (so noise-isolating headphones are definitely unsuitable). Well, there was certainly no danger of blocking out the sound of approaching traffic with these. You can hear the outside world just as clearly as when not wearing them.
Summary: I bought these headphones for the gym and jogging and I'm very impressed! They look good and the sound from them isn't bad either, for the price. The great thing about them is they fit around my ears because other headphones that insert into the ear-canal kept falling out. They have an advantage over other similar earphones because you can bend the slim metal clip that goes around the ear to nearly any shape.