Very comfortable and fit very true. but that is after he has worn them for 9+ hours. These are slightly thicker, have a better opening (to go over my large ears) and feel like better quality than the originals. Also, if you have kids or women bikes, it is not going to fit! Its plainly on the tag but advertised incorrectly! Bluetooth 4. I ve glued the pieces together with a expoxy made to hold heavy things to get her. Maybe I got something wrong during the construction of the bars. , I dont intend to dance in heels 3+ hours/day, 5 days a week). The parts arrive in plastic bags with a letter that identify which part they are.