Zero depth. Half of the time it does not even work due to a flaw in the faceplates on the side. She can still wear them because I purchased them big. Glad I tooked the risk. I thought I would get a men?s 6. I purchased this headset in May (4 months ago). If the chamber got too hot and stuck to the fabric, just make sure it?s all the way deflated and pull as hard as you can ? it?ll eventually come off. some crossover issues with English language (as its American) have to explain some things to daughter. And you know teens. This one is inline with their other products as far as sound quality goes.