The heal area is dipped so your heal sits well in them. My two pairs of Tevas took me hiking, backpacking, kayaking, and mountain climbing all over the world. The insert in the lid fell out. Went to Amazon and read all the reviews (there are ALOT) for these replacement earpads that are adaptable for my Bose and the price was ridiculously lower. Took the advice to get a size larger if I was in between sizes and they are a perfect fit. Estaba contenta con la compra pero en menos de 1 mes con el kimono se le desprendió un listón. Usually they are glued which can come apart in time. And the smaller-sized cups cover up just enough of my ears to keep out a lot of outside noise - like typing on a keyboard for instance. The freeway way busy and the $1500 board is unrecoverable. Product is as described, used it to complete a project to het that industrial look.