Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Asymmetrical length of earphone cords annoying

I bought this product because of the ability to change the size of the earbuds. I hadn't realized that the cords to the earbuds were of drastically different sizes. I clip my MP3 player to the waist of my shorts when I run and put the cord inside my shirt. I do not put it on my arm which is apparently what the product's designers assume. The short earbud kept falling out because it had no slack. I had to stop using them because it was so annoying.