Let me start by saying that I am not the product reviewing type but I was compelled to write a review on these because they were so high quality. I have tried almost every "sport" monster beats dr dre on the market including Polks, Scosche Sony, Panasonic, etc as well as the powerbeats. Every one, either expensive or cheap, failed in either fit or audio quality. The Isport fit better than any other headphone and is the only "sport" monster butterfly headphones I have managed to keep in my ear during a long run. The audio quality is strong(not as loud as the powerbeats) and they handle the highs and lows well. They are waterproof and machine washable(not sure if I will ever need that.) For me, they are the perfect sport headphones. Rumor has it monster tour beats is releasing a yellow version of these monster beats pro dr dre; I would have preferred that color but love my monster powerbeats.