Alpinestars - Bionic Neck SupportThe Bionic Neck Support Tech 2 is constructed from an advanced, high performance carbon polymer compound and is designed to help prevent injury in a crash situation by dissipating and diverting impact forces away from the neck and spine. The BNS functions when the riders helmet makes contact with the frame at the moment of a crash, thus providing a clean, solid surface which instantly channels damaging, compressive impact energy away from the neck and