Description CPR for Pocket or Key Chain, CPR Emergency with One- Way Valve Breathing Barrier for First Aid or AED Training, Features One- way valve: The emergency face is a one- way valve that can the rescuer during first aid : Our CPR masks are made of high- quality nylon pouch and polyethylene fiber CPR is a very compact 1.96" 1.96", nylon keychain with a ring, easy to carry around Multifunction Tool: both an emergency and a key chain kit that can easy to use Can be put into any first aid kit for its compacted shape. Great for the glove compartment, boat, purse, keychain, or home Package Including 10 x CPR First Aid Masks