It is the key in the description. The back and top parts are adjustable, but the velcro on that goes over your toes is purely decorative, there is a solid piece under it, so no matter how you adjust it it would not change anything. The external mic is good for ambient noise however not very good at picking up voices. If you care. The sizing is a little weird with it being half sizes. They work very well at lowering the noise when shooting and as I said they stay handy when youre in between shooting and doing whatever else you need to do . 5 because shes between 7 and 7. Doesnt Amazon have quality control measures in place anymore?? En mi caso hay ocasiones en las que necesito teclear grandes cantidades de números por lo que debo cambiar de teclado, en el caso de que solo sea para jugar y escribir vendrá perfecto. Will look great dressed as business casual, jeans and a blazer or even with a suit.