I?m a size 8, bought a medium and they fit perfect. I got these for my husband and hes become a super-fan. Supposedly you can connect each one to a separate device but I haven?t figured that out yet. Musste mich aber erstmal etwas dran gewöhnen. This is a quick review, I may add to it or edit later. Noise cancelling is there but could be a bit better the USB cord thats connected for the rgb effects could be longer especially if your using it for a gaming console however I am really pleased with these headphones they are absolutely perfect for gaming and I dont really have that much bad things to say about them. I have found during my journey to find a good Bluetooth headset that not all these things are created equal in the Bluetooth world. The soles are sturdy and can even be worn outdoors for casual walking. The particle board wont hold it, so the screw has nothing sturdy to attach to. The two locking wheels keep it in place as long as you screw them into opposite corners.