Instructions: when in use, keep the patient's respiratory tract unobstructed, place the pacifier in the middle of the respirators into the mouth of the wounded person, and blow the air from the other side facing the wounded person. Appliocation: It is a good tool for artificial respiration, and it is also one of the protective equipment for dangerous workers. It is also a rescue worker's supplies!. Design: Nylon keychain with ring, easy to carry around. Perfect for glove compartment, boat, purse, keychain , home, backpack ect. Portable: It is compacted in shape, can be placed into any first aid kit and carried easily. Material: Our CPR masks are made of high quality nylon pouch and polyethylene fiber.