CPR mask Perfect for first aid and emergency response kits. Contains one CPR mask with one way valves which protects operator and allows air to only flow into the patient. Contoured soft edged mask moulds to patient’s face easily. Features: 1. The quality transparent mask features a one-way filter valve and elastic head strap to facilitate hands-free operation 2. Easy to carry 3. Protection from contamination 4. One-way filter valve