McKesson NonSterile Gauze Sponge, 3 x 3 Inch, 1 Case of 4000 Backboard Straps contoured design made with skin friendly 71069 contoured design made with skin friendly materials * 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 100% cotton is ideal for wound dressing prepping and packing