A disposable, cost-effective shield that uses a one-way flapper valve and filter to reduce the risk of cross-contamination. Includes an ergonomically designed patient mouthpiece, a Round Rescue mouthpiece to allow ventilation from any position, a positive one-way isolation valve with particulate filter, and a semi-transparent face shield. Stores easily in first-aid kits, purses, sports bags, and glove compartments. Comes in a nylon key-chain pouch, which can be worn by policemen, firefighters, paramedics, first responders, or anyone who is trained in CPR. One size fits all patients.