The Prone Pillow is comfortably positions face and head in prone position with excellent ventilation from front and sides. Convenient open holes for patient tubing. Carefully designed for optimum stability while in use. Medical-grade, open-cell polyurethane foam "breathes" next to patient's skin providing a comfortable cooling sensation. Hypo-allergenic, radiolucent and flame retardant foam material. Measures 12" X 10" X 8". Case of 4.