MDI Micro Shield? Regular 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. 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.