KEMP USA 10-501 CPR Mask with O2 Inlet, Headstrap, Gloves, and Wipes a compact, hard shell, pocket-sized carrying case and features a one-way valve with filter. It has a contoured soft vinyl cuff that shapes easily to adult, child, and infant facial contours, preventing mouth-to-mouth contact with the victim. Its transparent dome allows the rescuer to check the victim’s mouth for lip color and secretions. The mask is ready to use with no need to assemble valve and filter.