This disclosure relates to a device for immobilizing infants and young children during radiographic examination. The device consists of a cellular foam insert contoured with a cavity to partially envelop and restrain the child, restraining straps made from a foam and fabric combination, and a plastic base designed to support the foam insert and provide a fastening point for the restraining straps. All of the materials used in the device are radiolucent, thus showing no trace of shadows or foreign artifacts on radiographic film.