Philadelphia Collar Material: Plastic, Foam, Nylon Feature:Provide the stability of cervical vertebra. CE/FDA/ISO9001 Detailed Description Item #: AFT-1076 Philadelphia CollarPhiladelphia Cervical Collar with Trachea 4 1/4 inch Size Available: S, M, L Color: beige (Skin) Philadelphia Cervical Collar with Trachea 4 1/4 inch