Los materiales w sienten de calidad. I must comment that I paid close to $100 dollars with prior headsets so the comparison is somewhat unfair. Needed something that would be comfortable all day long. i was worried after reading that people had issues with these being too narrow. They work fine and are comfortable, the only thing I don?t like is that you have to take them take them off the ear buds to allow charging. I will likely use the pulley and cable with my other cable system parts, but I cannot use the weight pin, and am not interested in buying a bunch of new Olympic size plates (2" hole) just to use this pin. No problems with connections like my other headphones. These are not active noise canceling IEMs. Now! Great music by Madeline Bell.