Multi-Grip Head Immobilizer The Multi-Grip Head Immobilizer was designed by a rescuer in 1989. Today, 20 years later, it is used throughout the nation. Simple, sturdy and sure. Why use anything else? Key Benefits Compatible with most C-collars and backboards X-ray, CT and MRI transparent Easy access to ears and non-claustrophobic Cost effective / disposable Buoyant for water rescue « Head strap sticks to board, not to skin or hair Infant size can be used in car-seat ** Can be used on motorcycle / football helmets Head and chin straps come with each thermo-sealed unit