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Picture of Headphones in a Helmet
This is a very simple way of incorporating headphones in a helmet that allows headphones. 
Hint its better to find headphones with a mic and a little remote on the wire so you can change songs or answer a call. 

Adding headphones to your helmet will make your riding more extreme and fun. The music will get you pumped up. 

Step 1: Materials

Picture of Materials
 
Brilliant!
Blechmen (author)  The Cartographer3 years ago
Thank you don't forget to vote I really want this GO Pro
GO Pro? Wrong contest bro
Blechmen (author)  CoxNdix3 years ago
It's in the extreme challenge