otherwise I am really happy with my purchase. These pads fit my Sony MDR-7506 perfectly. Such a game changer! If you are looking for a set of blue tooth headphones look no further than these. Take your time installing so that it is level and you will love the results. 5’3” 130lbs, got a size S. These are Certified Hi-Res Audio (wired mode) but we are seeing that designation more and more. Extra high intensity is not so easy, It wont simulate riding up a steep hill, or a high end spin bike, even if you could stand up , which I find not that good because I need higher resistance to stand up comfortably. I paid $48 for them. The sound quality is very good, plenty of volume and bass, and they are very comfortable to wear.