The ‘A9919-12’ is a Philadelphia Collar from the renowned medical equipment manufacturer, Smiths Medical. This medium-sized collar measures 3.25″. The Philadelphia Collar is designed to provide optimal support and stability to the neck region following an injury or surgery. It helps in maintaining the alignment of the cervical spine and promotes healing by restricting movement. This collar is a single-piece medical device that is easy to apply and adjust for a comfortable fit. Please note that this product is sold individually.