Narwall Mask does more than other masks to keep you safe:
Filters made in the USA with material tested to 99.99% VFE provide fantastic airflow.
Secure, airtight seal made from FDA food grade silicone. Originally designed for snorkeling.
Durable polycarbonate face shield protects your eyes and prevents you from touching your face.
One-way airflow (inhale comes in on top, exhale goes out in front) keeps every breath fresh, cool, and clean.
No exhaust valve or vent, so others are protected too.
I have 20 masks $10 each