Instruct: Classify Amazon reviews into positive or negative sentiment
Query: V-moda bass freq

I bought these headphones for a sansa clip mp3 player. I am trying to use these while I exercise. The problem is they will not stay in my ears when I am running or jumping rope. I have tried every size fitting and the only one that fits in my ears is the smallest size and they still wont stay in my ear. Thats a big problem for me. I bought these headphones because they say they have extra bass which is good for hip hop music but I don't hear it. The sound does get muddled when you listen loud and the music sounds like its coming out a tin can at times. I would not buy these for the gym because like I said they will not stay in your ears. I don't know how they retail for 50 dollars. Thats just crazy.