Made out of polyurethane foam with anti-sweat foam lining, which is hypoallergenic and skin friendly. The polyurethane sections are flexible and evenly distribute the pressure exerted on the lower jaw and neck. The foam sections can be removed and washed. Innovative system with a special mechanism that allows adjustment of the height of the collar with a choice of six positions. Use of the mechanism is easy and simple. (Pull out and turn the "dial" to select the desired height). Does not contain metal parts. Features a wide tracheotomy aperture. Restricts range of motion of the cervical spine. Helps reduce pressure on the area and prevents skin irritation. Features two articulated cervical compression pads, adjustable in height through the use of a mechanism, so that the collar is suitable for all patients. The treating physician is able to visually inspect the neck area. Compatible with X-ray, CT, and MRI.