Ambu® Perfit® Extrication Collars  
The Ambu Perfit collars are designed to assist with the maintenance of neutral alignment, prevention of lateral sway and anterior-posterior flexion and extension of the spine during transport or movement.
Disposable
Pre-shaped flip-chin piece to ensure they can be stored completely flat
Comes with a ventilated posterior shell forfluid drainage and a large hole for easy airway access
CT, MR and X-ray compatible