The Exhalation Valve Stoppers have been tested at RISE R&D Center in Sweden with evidence showing that it will block 99% of the exhaled air, diminishing the risk of respiratory droplets escaping into the ambient air. The valve stoppers can only be used for the Urban Air Mask 2.0.
Shipping and returns
- Expected delivery time is 1-6 working days depending on your location.
- We offer free returns and exchanges on unopened items.