Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Sweat, Pain, crack.

So after a year of using these headphones I found them to grow in discomfort. Also I sweat a lot in the gym and when I run. The sweat gets in my ear and stays there do to the shape of the headphone. How ever the sound was great and they stayed in place. After a year they did crack near the headphone peace. But fixed with super glue.