The product titled ‘COLLAR PHILADELPHIA 3.25 LG – A9919-13’ is a large size Philadelphia collar with a length of 3.25″. The Philadelphia collar is a neck brace used to prevent head and neck movement after a spinal cord injury. It helps in keeping the neck stable and provides support to the neck muscles to prevent further injury. It is designed to be comfortable and adjustable for the user. This collar is ideal for patients recovering from neck surgery or injury. Please note that this product is sold individually.