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Comfortably worn for 11 hours continuously while performing operating room work including intubation, extubation, line insertion, regional block placement, EHR documentation, and patient transport.

Greatly improved comfort compared to an N95 mask, being free of a super tight mask and no longer sucking air through mask.

If configured with filters on both inflow and outflow, surgical mask can be omitted. Completely frees face to receive cooling airflow.

Low 200 gram mass feels similar to a baseball cap during use. Even after 11 hour wear, facial skin unaffected unlike after a tight face mask.

Inspiration is without effort. Fan does the work of pulling air through filter.

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