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Why don’t you have an exhalation valve?

We designed the B2 specifically without an exhalation valve, in order to protect those around you.

We designed the B2 specifically without an exhalation valve, in order to protect those around you. Masks with exhalation valves do not filter the air being exhaled through the valve, therefore possibly exposing those around you to contagious particulates. The B2 filters both inbound and outbound air, so as to protect the user and those in the vicinity.

The Breathe99 Product Team is following research on the public health effects of exhalation valves on respirators as it emerges and will consider adding this feature in future product variations.