Extrication collars are injection molded from high density polyethylene plastic resin.  Patented, pre-molded chin support.  External sizing guide.  Color coded straps and labels.  Rear ventilation panel.  Foam padding.  Stores flat.  No assembly required.  Easy to apply and secure on patient.  X-ray, CT and MRI lucent.  C-collars.  Cervical Collars.