McKesson NonSterile Gauze Sponge, 3 x 3 Inch, 1 Case of 4000 Backboard Straps * A soft flexible dome or Parkinson s * A soft flexible dome that can be easily squeezed around the nose mouth and chin of the victim * A standard 15 mm port that can be used with bag mask resuscitation units or aerosol tubing * A compact mask valve with quick two piece assembly * Features elastic strap * Latex Free * Fully assembled ready to use * Features mask with O2 inlet one way valve filter head strap and gloves * One way valve and filter prevents backflow of air contaminants from patient to rescuer Waterproof film layer covering the dressing helps protect the wound from contamination by urine and feces Intended for single use applications 3 x 3 inches