Pros: Great sound, light weight.

Cons: Like most earphones, they will transfer sounds from the cables to the "earbuds" (microphonics) if you don't route the cables over the ear from behind before inserting them into your ears. You might need to google that if you can't picture it in your mind. If you route them that way, your ears will eliminate most of the induced noise.

Overall Review: I don't use mine during physical activity. Find some cheaper or sturdier earphones for that. These will last you a long time if you take care of them. And do not let the earbud part get wet!