The cost as it turns out was about half the price of my coach ticket. These things pack a lot of punch for a cheap set of headphones. There is no grip to your foot with this material. My eyes happened on this particular case. El azul oscuro lo he usado menos y aún funciona. Once you get close to it you can see and smell the hot glue underneath/around the rhinestones. However, we use three - left, center and right stage locations for productions. c. For the money there is not a lot to fault this headset. Im Vergleich zum Revolve hat der Boom 3 dank seiner satten Outdoor-Eigenschaften (IP67) klar die Nase vorn.