【Breathe Effective】Tight Air Seal around nose and mouth insuring no waste
【Medium Size 】 Visual Airflow Indicator. letting you know the correct speed breathe
【More Benefits and Use Scenarios】Not Only Person,but also your Pet,if the size is ok.pay to attention this spacer is unsterilized and for single patient use only.
【Sterile packaging】Sealed Package Clean Easy to take apart and clean
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