CPR Mask with One Way Valve: CPR mask can play a breathing barrier role for first responders when performing first aid, preventing mouth-to-mouth contact.
one-way
CPR Mask for Pocket or Key Chain, CPR Emergency Face Shield with One-Way Valve Breathing Barrier for First Aid or AED Training, Archer MedTech (6)
CPR Rescue Face Shield Mask Key Chain 6 Pack – Includes nylon pocket key chain. Archer MedTech Brand.