MDI Microshield X-Large CPR Rescue Breather in plastic pouch provides a physical barrier between victim and rescuer during mouth-to-mouth resuscitation. It features an anti-reflux airway to prevent back flow of victim? breath and body fluids. CPR micro holster contains a rescue breather and one pair of nitrile gloves enclosed in a nylon belt holster. It contains one rescue breather, one pair of nitrile gloves, one face shield and a biohazard disposal bag. CPR micro shield XL provides almost twice the coverage as the original CPR micro shield device. Filter is located above the valve to eliminate contact with the victim? fluids. CPR Micro-Key-Pro contains one rescue breather and one pair of nitrile gloves in a durable nylon pouch with a convenient key ring.