Features with adhesive and Velcro， glued back on the helmet， Velcro can be removed at any time， easy removal.For motorcyclists listen to MP3 music， the sound quality is great， with remote control to adjust the volume， very practicalStrong 3M glue on the back of the headset in the helmet inner surface， solid and durable.The soft， padded speakers attach to the inside of your helmet by Velcro pads (included)， have a volume dial controller as well as an extra long section of cable which connects via the jack should you need more length.If you have an MP3 attached to your motorbike， get great sound whilst you're on the move with this pair of helmet speakers.Include:1x headset