8/5. 5 and the 11s fit great. Very easy to use and it really is silent. I wanted a warm, cozy robe but without some of the bulk. It was really easy to set up and it works great! I read this in other reviews so i got zipties to use instead of the connectors but that meant you cant use the doors because of the way they are made. Mein Fazit muss hier leider sein: Beyerdynamic legt keinen Wert auf Kundenbindung. These were my 1st pair and I cant walk in heels but these are like walking in tennis shoes. Also, my parents said theirs broke after a long time by having the place it plugs in stop making it charge, so maybe go easy on it plugging it in. I should not have listened to the reviews.