It is cheap material so I didnt expect a lot. The sandal is very comfortable overall, I am always wearing it at home I made sure by putting my finger in the holes to align accurately. 0 Bluetooth & long battery life are a definite plus. They do not distort the sound like head mics do, so you get to hear the sweet natural tones of the kids voices. I mean no Active noise cancelation. I fear this review will be lost in the sea of reviews. Nice looking shoe but WAY too big. I really recommend it. Read with the lights on!