Pulling the helmet off a crash victim can, in seconds, cause further trauma to the neck and cervical spine-resulting in serious debilitating and permanent damage. These Simpson Eject Bladder helmet removal systems are designed to aid in safe removal by pushing the helmet off the head after the upper spine has been immobilized. Essentially, they're an airbag that's inflated either by hand or by a CO2 cartridge when an EMT gets to you after an impact. Simpson Eject Bladder helmet removal systems are installed in your helmet. Once installed, you essentially forget about them until the dark day when you have an impact that threatens your spinal cord. The EMT will attach an inflator bulb or CO2 cartridge to the valve hanging out of the back of your helmet and pump up the bag, lifting the helmet off your head without any strain on your neck.