They?ve held up great despite the mileage I?ve put on them. 5-stars for sound quality. They do have a nice sound but for some reason when I plug them into my cell phone and listen to YouTube videos there are many pops and clicks that result -- that didnt happen with my cheap 5 dollar headphones! Pretty cool little Sheets! THEY STINK WHEN YOU GET THEM WET! They are comfortable, I liked them until they got wet and realized that they are defective. You will not be disappointed with the range of tones. Ill give them 5 stars for comfort. I used this speaker last evening and it began to have a burning smell. I was looking for slippers easy to wash and that will stay on her feet.