Medium Philadelphia cervical collar has an adjustable neck height up to 70mm (2 3/4" in) and fits necks that are 16 inches to 21 inches around. This cervical collar provides very high immobilization yet still provides patient comfort. Molded out of high quality "Ethafoam" to ensure comfortable support. Anatomical shape, preformed chin and opening for a tracheotomy.
Available in medium, large and x-large sizes. All three sizes expand from 16 to 21 inches. Difference in sizes is the neck height. Medium is up to 70 mm., Large is 70 mm to 100 mm (2.75 inches to 3 15/16 inches), and Extra Large is over 100 mm. (3 15/16").