The Pacific Adjustable Collar (PAC) is designed to afford effective control and limitations of cervical spinal motion; flexion/extension, rotation and lateral flexion. The collar is adjustable in height, within two predetermined ranges, and can be securely and easily adjusted by the orthotist to ensure optimum alignment and patient comfort. Model C-14 is available in two adult sizes with removable, washable liners. Note: Replacement liner kits may also be ordered. Please contact our customer service department for details.