Get surround sound in any hat or helmet with Syphon, the flexible sound wrap speakers. Made with strong Velcro on the back, Syphon is an ultra thin and long strap that easily adheres to the inside of your head gear. Neatly tucked inside this strap are two flexible speakers that can reach 100 decibels. The sweat proof band also has a little black box for the Bluetooth components, the 12-hour battery, as well as an auxiliary port to plug in your device. The strap is made of a neoprene and poly-elastane blend to keep you and the speakers comfortable. At just 1/10 of an inch thick and with comfortable fabrics, you won’t even notice Syphon, just the crystal clear audio.