I ran a marathon and trained with these and by far the best . I have four other ear phones and these sound the best once you get them in your ear. The cord is nice but a bit heavy but these are awesome to wear.
I've been using these a lot! training sometimes 2 times a day, 5 times a week for 3 months and they're actually really nice! sound quality and it was able to put up with me sweating in the gym when other headphones would act up. one day as I was studying for finals,1 side of the headphones just stopped working... I haven't been running, lifting or anything that week because I was on a break and decided focus time into studying... but yea I think they're a solid investment but I probably just put it through its limits sweat wise. These are water resistance.... not water proof. They do come with a lifetime warranty so hopefully I get a new pair soon but yea just thought i'd let some people know!