The Original Philadelphia Collar is a cervical collar designed for use by individauls with neck or spinal cord injuries. This collar restricts cervical spine flexion, extension, and rotation to promote recovery. It is made from Plastazote foam and has anterior and posterior rigid plastic reinforcement supports to limit movement, and adjustable bilateral Velcro hook and loop fasteners. It provides total cervical arch support to maintain neutral alignment of the cervical spine. The collar has contoured shoulder supports for stability, ventilation openings to reduce heat and moisture, and a maneuverable chin support for airway management. It is latex-free, water-resistant, and X-ray, CT and MRI lucent, and can be customized for individual requirements. It can be cleaned with mild soap and water. SIZES: Infant, pediatric, and four adult ranges (O2, O3, O4, and O5), with extra small, small, medium, large, and extra- large sizes in each adult range. DIMENSIONS: Height is 1.25 inches (infant), 1.75 inches (pediatric), 2.25 inches (O2 range), 3.25 inches (O3 range), 4.25 inches (O4 range), or 5.25 inches (O5 range). Circumference is 6 to 8 inches (infant), 8 to 11 inches (pediatric), up to 10 inches (extra-small O2 to O5), 10 to 13 inches (small O2 to O5), 13 to 16 inches (medium O2 to O5), 16 to 19 inches (large O2 to O5), or 19 inches and up (extra-large O2 to O5).