The sound quality is great as well as comfort. It's nice how you get quite a few different cord lengths and a bag with the headphones. The design is nice and sleek. The idea to make it compact and possible to fold is great. However there's a production mistake and therefore the hinge for one of the sides of the headphones became very lose after just a few weeks of using them. Now it's impossible to adjust the length and the comfort of wearing them went down quite a bit.
Overall, I really like these headphones. If they didn't have this hinge problem, they would be close to perfect. Since I'm hoping that these headphones will be replaced for me, I rate them as "okay".