EMI's Immobilizer Adjustable Cervical Collar adjusts at four positions (no-neck, short, regular, tall). The collar includes a large posterior and anterior opening to allow the rescuer palpation of the spine and access to the tracheal and carotid areas. It can be penetrated by X-ray, MRI, or CAT scans and is compatible with spine boards and other head immobilizers.
 
The child collar has all the same features but has three adjustable positions (Mini, Mid, and Pedi).
 
Adult Size: 22 1/2" L x 7" W x 1/4" H