Injection molded polyethylene plastic body for improved rigidity and durability.  Latex-free, non-toxic and hypoallergenic foam reduces skin irritation.  Oversized trachea opening for quick access to carotid pulse monitoring and emergency tracheotomies.  Pre-molded level chin support maintains patient in neutral alignment.  Multi-height.  Adjustments fit almost all adults (4 positions) and pediatrics(3 positions).  One-piece design enables efficient storage.  Water resistant.  X-ray, CT and MRI lucent.  Adjustable collars.  Extrication collars.  C-collars.