wish they came in a wide size. They are cute but not as cute as on line because they look cheap. I should have listened to other reviewers. I had to get a second pair to make sure that I had a backup pair just in case; I highly recommend these for tennis or pickleball. Plug interface: 3. However, within a day of using the product I noticed the audio cut out whenever I would turn my head to the left. Light on and cool to the touch and she says it feels so silky on and can move in bed in it without it getting stuck and tangled in fact she says its like not wearing anything in bed its soo comfortable and cool ! Gorgeous shoes: Very comfortable, well made, very flattering to feet with stretchy material, very stylish/modern with heel, outer soul, toe of inner soul and upper, to match in color. If I find myself looking down for too long they will start to slip off my head. The quality is not what I expected - I would prefer not to put an expensive product inside this case.