Actimove Cervical Collars are made of pre-shaped foam for a quality fit. The cervical collar comes with a stockinette to cover the collar. The Actimove cervical collar holds the head in a neutral position to to maintain neck stability and restrict range-of-motion. The Actimove collars are great for use to combat acute neck injuries and cervical conditions. Neck brace sizes range from x-small to x-large to fit necks measuring 11"-19". Choose a cervical collar with firm or medium foam densities.