Non-rebreather Oxygen mask is used for administration of free flow oxygen up to 100% oxygen. It comes complete with mask and tubing. The CPR Pocket Mask is just what the name said it is, a CPR Mask. This mask also has an oxygen port that allows emergency oxygen to be supplied directly to the patient while preforming CPR. It comes in a hard clam shell; includes a one way valve and head strap. CPR Face Shield Key chain is a small single use barrier for use while providing CPR. It comes in a nylon carrying bag that can attach to your keys for quick access.