Wearing headphone when you're riding a bike is awesome, but it's also extremely dangerous and usually illegal. The Shake, however, is a SurfaceSound speaker, which means it actually uses the surface of your helmet as the speaker. Sync up the Bluetooth dongle to your media player and it'll be like pumping music directly into your head during your ride. It's water-resistant and has touch sensitive controls so you won't have to take your eyes off the road and risk your life to change the track when Rick Astley comes up on random play. It's available now for pre-order for $120, but it won't actually hit stores until April 15th, so we'll send our winner his or her speaker as soon as ours comes in. It will be too cold for bike shorts before then anyway.