A necessity for all first responders. Prevents mouth to mouth contact during CPR emergencies. Translucent vinyl shield features a one-way valve and filter that eliminates blowback or bodily fluids from contacting the rescuer. Compatible with CPR mannequins and models. Includes one Lifeshield in a nylon carry case with swivel eye-snap hook that can attach to a keychain or belt loop. CPR instructions are printed on Lifeshield.